The functions, handles and methods applications use to access and manage data with WiredTiger. More...
Classes | |
struct | WT_ITEM |
A raw item of data to be managed, including a pointer to the data and a length. More... | |
struct | WT_MODIFY |
A set of modifications for a value, including a pointer to new data and a length, plus a target offset in the value and an optional length of data in the value to be replaced. More... | |
struct | WT_CURSOR |
A WT_CURSOR handle is the interface to a cursor. More... | |
struct | WT_SESSION |
All data operations are performed in the context of a WT_SESSION. More... | |
struct | WT_CONNECTION |
A connection to a WiredTiger database. More... | |
struct | WT_EVENT_HANDLER |
The interface implemented by applications to handle error, informational and progress messages. More... | |
struct | WT_CONFIG_ITEM |
The configuration information returned by the WiredTiger configuration parsing functions in the WT_EXTENSION_API and the public API. More... | |
struct | WT_CONFIG_PARSER |
A handle that can be used to search and traverse configuration strings compatible with WiredTiger APIs. More... | |
Macros | |
#define | WT_INTPACK64_MAXSIZE |
The maximum packed size of a 64-bit integer. More... | |
#define | WT_INTPACK32_MAXSIZE |
The maximum packed size of a 32-bit integer. More... | |
Enumerations | |
enum | WT_TS_TXN_TYPE { WT_TS_TXN_TYPE_COMMIT, WT_TS_TXN_TYPE_DURABLE, WT_TS_TXN_TYPE_PREPARE, WT_TS_TXN_TYPE_READ } |
WT_SESSION::timestamp_transaction_uint timestamp types. More... | |
Functions | |
int | wiredtiger_open (const char *home, WT_EVENT_HANDLER *event_handler, const char *config, WT_CONNECTION **connectionp) |
Open a connection to a database. More... | |
const char * | wiredtiger_strerror (int error) |
Return information about a WiredTiger error as a string (see WT_SESSION::strerror for a thread-safe API). More... | |
Data packing and unpacking | |
typedef struct __wt_pack_stream | WT_PACK_STREAM |
Streaming interface to packing. More... | |
int | wiredtiger_struct_pack (WT_SESSION *session, void *buffer, size_t len, const char *format,...) |
Pack a structure into a buffer. More... | |
int | wiredtiger_struct_size (WT_SESSION *session, size_t *lenp, const char *format,...) |
Calculate the size required to pack a structure. More... | |
int | wiredtiger_struct_unpack (WT_SESSION *session, const void *buffer, size_t len, const char *format,...) |
Unpack a structure from a buffer. More... | |
int | wiredtiger_pack_start (WT_SESSION *session, const char *format, void *buffer, size_t size, WT_PACK_STREAM **psp) |
Start a packing operation into a buffer with the given format string. More... | |
int | wiredtiger_unpack_start (WT_SESSION *session, const char *format, const void *buffer, size_t size, WT_PACK_STREAM **psp) |
Start an unpacking operation from a buffer with the given format string. More... | |
int | wiredtiger_pack_close (WT_PACK_STREAM *ps, size_t *usedp) |
Close a packing stream. More... | |
int | wiredtiger_pack_item (WT_PACK_STREAM *ps, WT_ITEM *item) |
Pack an item into a packing stream. More... | |
int | wiredtiger_pack_int (WT_PACK_STREAM *ps, int64_t i) |
Pack a signed integer into a packing stream. More... | |
int | wiredtiger_pack_str (WT_PACK_STREAM *ps, const char *s) |
Pack a string into a packing stream. More... | |
int | wiredtiger_pack_uint (WT_PACK_STREAM *ps, uint64_t u) |
Pack an unsigned integer into a packing stream. More... | |
int | wiredtiger_unpack_item (WT_PACK_STREAM *ps, WT_ITEM *item) |
Unpack an item from a packing stream. More... | |
int | wiredtiger_unpack_int (WT_PACK_STREAM *ps, int64_t *ip) |
Unpack a signed integer from a packing stream. More... | |
int | wiredtiger_unpack_str (WT_PACK_STREAM *ps, const char **sp) |
Unpack a string from a packing stream. More... | |
int | wiredtiger_unpack_uint (WT_PACK_STREAM *ps, uint64_t *up) |
Unpack an unsigned integer from a packing stream. More... | |
Configuration strings | |
int | wiredtiger_config_parser_open (WT_SESSION *session, const char *config, size_t len, WT_CONFIG_PARSER **config_parserp) |
Create a handle that can be used to parse or create configuration strings compatible with WiredTiger APIs. More... | |
Support functions | |
uint32_t(*)(const void *, size_t) | wiredtiger_crc32c_func (void) |
Return a pointer to a function that calculates a CRC32C checksum. More... | |
int | wiredtiger_calc_modify (WT_SESSION *session, const WT_ITEM *oldv, const WT_ITEM *newv, size_t maxdiff, WT_MODIFY *entries, int *nentriesp) |
Calculate a set of WT_MODIFY operations to represent an update. More... | |
const char * | wiredtiger_version (int *majorp, int *minorp, int *patchp) |
Get version information. More... | |
Error returns | |
Most functions and methods in WiredTiger return an integer code indicating whether the operation succeeded or failed. A return of zero indicates success, all non-zero return values indicate some kind of failure. WiredTiger reserves all values from -31,800 to -31,999 as possible error return values. WiredTiger may also return C99/POSIX error codes such as The following are all of the WiredTiger-specific error returns: | |
#define | WT_ROLLBACK |
Conflict between concurrent operations. More... | |
#define | WT_DUPLICATE_KEY |
Attempt to insert an existing key. More... | |
#define | WT_ERROR |
Non-specific WiredTiger error. More... | |
#define | WT_NOTFOUND |
Item not found. More... | |
#define | WT_PANIC |
WiredTiger library panic. More... | |
#define | WT_RUN_RECOVERY |
Recovery must be run to continue. More... | |
#define | WT_CACHE_FULL |
Operation would overflow cache. More... | |
#define | WT_PREPARE_CONFLICT |
Conflict with a prepared update. More... | |
#define | WT_TRY_SALVAGE |
Database corruption detected. More... | |
Incremental backup types | |
#define | WT_BACKUP_INVALID |
invalid type | |
#define | WT_BACKUP_FILE |
whole file | |
#define | WT_BACKUP_RANGE |
file range | |
Log record and operation types | |
#define | WT_LOGREC_CHECKPOINT |
checkpoint | |
#define | WT_LOGREC_COMMIT |
transaction commit | |
#define | WT_LOGREC_FILE_SYNC |
file sync | |
#define | WT_LOGREC_MESSAGE |
message | |
#define | WT_LOGREC_SYSTEM |
system/internal record | |
#define | WT_LOGOP_INVALID |
invalid operation | |
#define | WT_LOGOP_COL_PUT |
column-store put | |
#define | WT_LOGOP_COL_REMOVE |
column-store remove | |
#define | WT_LOGOP_COL_TRUNCATE |
column-store truncate | |
#define | WT_LOGOP_ROW_PUT |
row-store put | |
#define | WT_LOGOP_ROW_REMOVE |
row-store remove | |
#define | WT_LOGOP_ROW_TRUNCATE |
row-store truncate | |
#define | WT_LOGOP_CHECKPOINT_START |
checkpoint start | |
#define | WT_LOGOP_PREV_LSN |
previous LSN | |
#define | WT_LOGOP_COL_MODIFY |
column-store modify | |
#define | WT_LOGOP_ROW_MODIFY |
row-store modify | |
#define | WT_LOGOP_TXN_TIMESTAMP |
Diagnostic: transaction timestamps. | |
Connection statistics | |
Statistics are accessed through cursors with | |
#define | WT_STAT_CONN_LSM_WORK_QUEUE_APP |
LSM: application work units currently queued. | |
#define | WT_STAT_CONN_LSM_WORK_QUEUE_MANAGER |
LSM: merge work units currently queued. | |
#define | WT_STAT_CONN_LSM_ROWS_MERGED |
LSM: rows merged in an LSM tree. | |
#define | WT_STAT_CONN_LSM_CHECKPOINT_THROTTLE |
LSM: sleep for LSM checkpoint throttle. | |
#define | WT_STAT_CONN_LSM_MERGE_THROTTLE |
LSM: sleep for LSM merge throttle. | |
#define | WT_STAT_CONN_LSM_WORK_QUEUE_SWITCH |
LSM: switch work units currently queued. | |
#define | WT_STAT_CONN_LSM_WORK_UNITS_DISCARDED |
LSM: tree maintenance operations discarded. | |
#define | WT_STAT_CONN_LSM_WORK_UNITS_DONE |
LSM: tree maintenance operations executed. | |
#define | WT_STAT_CONN_LSM_WORK_UNITS_CREATED |
LSM: tree maintenance operations scheduled. | |
#define | WT_STAT_CONN_LSM_WORK_QUEUE_MAX |
LSM: tree queue hit maximum. | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS_UPDATE |
block-manager: block cache cached blocks updated | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYTES_UPDATE |
block-manager: block cache cached bytes updated | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS_EVICTED |
block-manager: block cache evicted blocks | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_FILESIZE |
block-manager: block cache file size causing bypass | |
#define | WT_STAT_CONN_BLOCK_CACHE_DATA_REFS |
block-manager: block cache lookups | |
#define | WT_STAT_CONN_BLOCK_CACHE_NOT_EVICTED_OVERHEAD |
block-manager: block cache number of blocks not evicted due to overhead | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_WRITEALLOC |
block-manager: block cache number of bypasses because no-write- allocate setting was on | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_OVERHEAD_PUT |
block-manager: block cache number of bypasses due to overhead on put | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_GET |
block-manager: block cache number of bypasses on get | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_PUT |
block-manager: block cache number of bypasses on put because file is too small | |
#define | WT_STAT_CONN_BLOCK_CACHE_EVICTION_PASSES |
block-manager: block cache number of eviction passes | |
#define | WT_STAT_CONN_BLOCK_CACHE_HITS |
block-manager: block cache number of hits including existence checks | |
#define | WT_STAT_CONN_BLOCK_CACHE_MISSES |
block-manager: block cache number of misses including existence checks | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYPASS_CHKPT |
block-manager: block cache number of put bypasses on checkpoint I/O | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS_REMOVED |
block-manager: block cache removed blocks | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS |
block-manager: block cache total blocks | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS_INSERT_READ |
block-manager: block cache total blocks inserted on read path | |
#define | WT_STAT_CONN_BLOCK_CACHE_BLOCKS_INSERT_WRITE |
block-manager: block cache total blocks inserted on write path | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYTES |
block-manager: block cache total bytes | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYTES_INSERT_READ |
block-manager: block cache total bytes inserted on read path | |
#define | WT_STAT_CONN_BLOCK_CACHE_BYTES_INSERT_WRITE |
block-manager: block cache total bytes inserted on write path | |
#define | WT_STAT_CONN_BLOCK_PRELOAD |
block-manager: blocks pre-loaded | |
#define | WT_STAT_CONN_BLOCK_READ |
block-manager: blocks read | |
#define | WT_STAT_CONN_BLOCK_WRITE |
block-manager: blocks written | |
#define | WT_STAT_CONN_BLOCK_BYTE_READ |
block-manager: bytes read | |
#define | WT_STAT_CONN_BLOCK_BYTE_READ_MMAP |
block-manager: bytes read via memory map API | |
#define | WT_STAT_CONN_BLOCK_BYTE_READ_SYSCALL |
block-manager: bytes read via system call API | |
#define | WT_STAT_CONN_BLOCK_BYTE_WRITE |
block-manager: bytes written | |
#define | WT_STAT_CONN_BLOCK_BYTE_WRITE_CHECKPOINT |
block-manager: bytes written for checkpoint | |
#define | WT_STAT_CONN_BLOCK_BYTE_WRITE_MMAP |
block-manager: bytes written via memory map API | |
#define | WT_STAT_CONN_BLOCK_BYTE_WRITE_SYSCALL |
block-manager: bytes written via system call API | |
#define | WT_STAT_CONN_BLOCK_MAP_READ |
block-manager: mapped blocks read | |
#define | WT_STAT_CONN_BLOCK_BYTE_MAP_READ |
block-manager: mapped bytes read | |
#define | WT_STAT_CONN_BLOCK_REMAP_FILE_RESIZE |
block-manager: number of times the file was remapped because it changed size via fallocate or truncate | |
#define | WT_STAT_CONN_BLOCK_REMAP_FILE_WRITE |
block-manager: number of times the region was remapped via write | |
#define | WT_STAT_CONN_CACHE_READ_APP_COUNT |
cache: application threads page read from disk to cache count | |
#define | WT_STAT_CONN_CACHE_READ_APP_TIME |
cache: application threads page read from disk to cache time (usecs) | |
#define | WT_STAT_CONN_CACHE_WRITE_APP_COUNT |
cache: application threads page write from cache to disk count | |
#define | WT_STAT_CONN_CACHE_WRITE_APP_TIME |
cache: application threads page write from cache to disk time (usecs) | |
#define | WT_STAT_CONN_CACHE_BYTES_UPDATES |
cache: bytes allocated for updates | |
#define | WT_STAT_CONN_CACHE_BYTES_IMAGE |
cache: bytes belonging to page images in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_HS |
cache: bytes belonging to the history store table in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_INUSE |
cache: bytes currently in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_DIRTY_TOTAL |
cache: bytes dirty in the cache cumulative | |
#define | WT_STAT_CONN_CACHE_BYTES_OTHER |
cache: bytes not belonging to page images in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_READ |
cache: bytes read into cache | |
#define | WT_STAT_CONN_CACHE_BYTES_WRITE |
cache: bytes written from cache | |
#define | WT_STAT_CONN_CACHE_LOOKASIDE_SCORE |
cache: cache overflow score | |
#define | WT_STAT_CONN_CACHE_EVICTION_CHECKPOINT |
cache: checkpoint blocked page eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_CHECKPOINT_HS |
cache: checkpoint of history store file blocked non-history store page eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_GET_REF |
cache: eviction calls to get a page | |
#define | WT_STAT_CONN_CACHE_EVICTION_GET_REF_EMPTY |
cache: eviction calls to get a page found queue empty | |
#define | WT_STAT_CONN_CACHE_EVICTION_GET_REF_EMPTY2 |
cache: eviction calls to get a page found queue empty after locking | |
#define | WT_STAT_CONN_CACHE_EVICTION_AGGRESSIVE_SET |
cache: eviction currently operating in aggressive mode | |
#define | WT_STAT_CONN_CACHE_EVICTION_EMPTY_SCORE |
cache: eviction empty score | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_1 |
cache: eviction gave up due to detecting an out of order on disk value behind the last update on the chain | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_2 |
cache: eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_3 |
cache: eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_4 |
cache: eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update | |
#define | WT_STAT_CONN_CACHE_EVICTION_BLOCKED_REMOVE_HS_RACE_WITH_CHECKPOINT |
cache: eviction gave up due to needing to remove a record from the history store but checkpoint is running | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_PASSES |
cache: eviction passes of a file | |
#define | WT_STAT_CONN_CACHE_EVICTION_QUEUE_EMPTY |
cache: eviction server candidate queue empty when topping up | |
#define | WT_STAT_CONN_CACHE_EVICTION_QUEUE_NOT_EMPTY |
cache: eviction server candidate queue not empty when topping up | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_EVICTING |
cache: eviction server evicting pages | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_DIRTY_PAGES_DURING_CHECKPOINT |
cache: eviction server skips dirty pages during a running checkpoint | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_METATDATA_WITH_HISTORY |
cache: eviction server skips metadata pages with history | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_PAGES_LAST_RUNNING |
cache: eviction server skips pages that are written with transactions greater than the last running | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_PAGES_RETRY |
cache: eviction server skips pages that previously failed eviction and likely will again | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_UNWANTED_PAGES |
cache: eviction server skips pages that we do not want to evict | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_TREES_TOO_MANY_ACTIVE_WALKS |
cache: eviction server skips trees because there are too many active walks | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_CHECKPOINTING_TREES |
cache: eviction server skips trees that are being checkpointed | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_TREES_STICK_IN_CACHE |
cache: eviction server skips trees that are configured to stick in cache | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_TREES_EVICTION_DISABLED |
cache: eviction server skips trees that disable eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SKIP_TREES_NOT_USEFUL_BEFORE |
cache: eviction server skips trees that were not useful before | |
#define | WT_STAT_CONN_CACHE_EVICTION_SERVER_SLEPT |
cache: eviction server slept, because we did not make progress with eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_SLOW |
cache: eviction server unable to reach eviction goal | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_LEAF_NOTFOUND |
cache: eviction server waiting for a leaf page | |
#define | WT_STAT_CONN_CACHE_EVICTION_STATE |
cache: eviction state | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_SLEEPS |
cache: eviction walk most recent sleeps for checkpoint handle gathering | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_LT10 |
cache: eviction walk target pages histogram - 0-9 | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_LT32 |
cache: eviction walk target pages histogram - 10-31 | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_GE128 |
cache: eviction walk target pages histogram - 128 and higher | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_LT64 |
cache: eviction walk target pages histogram - 32-63 | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_LT128 |
cache: eviction walk target pages histogram - 64-128 | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_PAGE_REDUCED |
cache: eviction walk target pages reduced due to history store cache pressure | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_STRATEGY_BOTH_CLEAN_AND_DIRTY |
cache: eviction walk target strategy both clean and dirty pages | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_STRATEGY_CLEAN |
cache: eviction walk target strategy only clean pages | |
#define | WT_STAT_CONN_CACHE_EVICTION_TARGET_STRATEGY_DIRTY |
cache: eviction walk target strategy only dirty pages | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_ABANDONED |
cache: eviction walks abandoned | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_STOPPED |
cache: eviction walks gave up because they restarted their walk twice | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_GAVE_UP_NO_TARGETS |
cache: eviction walks gave up because they saw too many pages and found no candidates | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_GAVE_UP_RATIO |
cache: eviction walks gave up because they saw too many pages and found too few candidates | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_ENDED |
cache: eviction walks reached end of tree | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_RESTART |
cache: eviction walks restarted | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_FROM_ROOT |
cache: eviction walks started from root of tree | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK_SAVED_POS |
cache: eviction walks started from saved location in tree | |
#define | WT_STAT_CONN_CACHE_EVICTION_ACTIVE_WORKERS |
cache: eviction worker thread active | |
#define | WT_STAT_CONN_CACHE_EVICTION_WORKER_CREATED |
cache: eviction worker thread created | |
#define | WT_STAT_CONN_CACHE_EVICTION_WORKER_EVICTING |
cache: eviction worker thread evicting pages | |
#define | WT_STAT_CONN_CACHE_EVICTION_WORKER_REMOVED |
cache: eviction worker thread removed | |
#define | WT_STAT_CONN_CACHE_EVICTION_STABLE_STATE_WORKERS |
cache: eviction worker thread stable number | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_ACTIVE |
cache: files with active eviction walks | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALKS_STARTED |
cache: files with new eviction walks started | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_RETUNE |
cache: force re-tuning of eviction workers once in a while | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_NO_RETRY |
cache: forced eviction - do not retry count to evict pages selected to evict during reconciliation | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_HS_FAIL |
cache: forced eviction - history store pages failed to evict while session has history store cursor open | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_HS |
cache: forced eviction - history store pages selected while session has history store cursor open | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_HS_SUCCESS |
cache: forced eviction - history store pages successfully evicted while session has history store cursor open | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_CLEAN |
cache: forced eviction - pages evicted that were clean count | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_CLEAN_TIME |
cache: forced eviction - pages evicted that were clean time (usecs) | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_DIRTY |
cache: forced eviction - pages evicted that were dirty count | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_DIRTY_TIME |
cache: forced eviction - pages evicted that were dirty time (usecs) | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_LONG_UPDATE_LIST |
cache: forced eviction - pages selected because of a large number of updates to a single item | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_DELETE |
cache: forced eviction - pages selected because of too many deleted items count | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE |
cache: forced eviction - pages selected count | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_FAIL |
cache: forced eviction - pages selected unable to be evicted count | |
#define | WT_STAT_CONN_CACHE_EVICTION_FORCE_FAIL_TIME |
cache: forced eviction - pages selected unable to be evicted time | |
#define | WT_STAT_CONN_CACHE_EVICTION_HAZARD |
cache: hazard pointer blocked page eviction | |
#define | WT_STAT_CONN_CACHE_HAZARD_CHECKS |
cache: hazard pointer check calls | |
#define | WT_STAT_CONN_CACHE_HAZARD_WALKS |
cache: hazard pointer check entries walked | |
#define | WT_STAT_CONN_CACHE_HAZARD_MAX |
cache: hazard pointer maximum array length | |
#define | WT_STAT_CONN_CACHE_HS_SCORE |
cache: history store score | |
#define | WT_STAT_CONN_CACHE_HS_INSERT |
cache: history store table insert calls | |
#define | WT_STAT_CONN_CACHE_HS_INSERT_RESTART |
cache: history store table insert calls that returned restart | |
#define | WT_STAT_CONN_CACHE_HS_ONDISK_MAX |
cache: history store table max on-disk size | |
#define | WT_STAT_CONN_CACHE_HS_ONDISK |
cache: history store table on-disk size | |
#define | WT_STAT_CONN_CACHE_HS_ORDER_LOSE_DURABLE_TIMESTAMP |
cache: history store table out-of-order resolved updates that lose their durable timestamp | |
#define | WT_STAT_CONN_CACHE_HS_ORDER_REINSERT |
cache: history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp | |
#define | WT_STAT_CONN_CACHE_HS_READ |
cache: history store table reads | |
#define | WT_STAT_CONN_CACHE_HS_READ_MISS |
cache: history store table reads missed | |
#define | WT_STAT_CONN_CACHE_HS_READ_SQUASH |
cache: history store table reads requiring squashed modifies | |
#define | WT_STAT_CONN_CACHE_HS_KEY_TRUNCATE_RTS_UNSTABLE |
cache: history store table truncation by rollback to stable to remove an unstable update | |
#define | WT_STAT_CONN_CACHE_HS_KEY_TRUNCATE_RTS |
cache: history store table truncation by rollback to stable to remove an update | |
#define | WT_STAT_CONN_CACHE_HS_KEY_TRUNCATE |
cache: history store table truncation to remove an update | |
#define | WT_STAT_CONN_CACHE_HS_KEY_TRUNCATE_ONPAGE_REMOVAL |
cache: history store table truncation to remove range of updates due to key being removed from the data page during reconciliation | |
#define | WT_STAT_CONN_CACHE_HS_ORDER_REMOVE |
cache: history store table truncation to remove range of updates due to out-of-order timestamp update on data page | |
#define | WT_STAT_CONN_CACHE_HS_WRITE_SQUASH |
cache: history store table writes requiring squashed modifies | |
#define | WT_STAT_CONN_CACHE_INMEM_SPLITTABLE |
cache: in-memory page passed criteria to be split | |
#define | WT_STAT_CONN_CACHE_INMEM_SPLIT |
cache: in-memory page splits | |
#define | WT_STAT_CONN_CACHE_EVICTION_INTERNAL |
cache: internal pages evicted | |
#define | WT_STAT_CONN_CACHE_EVICTION_INTERNAL_PAGES_QUEUED |
cache: internal pages queued for eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_INTERNAL_PAGES_SEEN |
cache: internal pages seen by eviction walk | |
#define | WT_STAT_CONN_CACHE_EVICTION_INTERNAL_PAGES_ALREADY_QUEUED |
cache: internal pages seen by eviction walk that are already queued | |
#define | WT_STAT_CONN_CACHE_EVICTION_SPLIT_INTERNAL |
cache: internal pages split during eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_SPLIT_LEAF |
cache: leaf pages split during eviction | |
#define | WT_STAT_CONN_CACHE_BYTES_MAX |
cache: maximum bytes configured | |
#define | WT_STAT_CONN_CACHE_EVICTION_MAXIMUM_MILLISECONDS |
cache: maximum milliseconds spent at a single eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_MAXIMUM_PAGE_SIZE |
cache: maximum page size seen at eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_DIRTY |
cache: modified pages evicted | |
#define | WT_STAT_CONN_CACHE_EVICTION_APP_DIRTY |
cache: modified pages evicted by application threads | |
#define | WT_STAT_CONN_CACHE_TIMED_OUT_OPS |
cache: operations timed out waiting for space in cache | |
#define | WT_STAT_CONN_CACHE_READ_OVERFLOW |
cache: overflow pages read into cache | |
#define | WT_STAT_CONN_CACHE_EVICTION_DEEPEN |
cache: page split during eviction deepened the tree | |
#define | WT_STAT_CONN_CACHE_WRITE_HS |
cache: page written requiring history store records | |
#define | WT_STAT_CONN_CACHE_PAGES_INUSE |
cache: pages currently held in the cache | |
#define | WT_STAT_CONN_CACHE_EVICTION_APP |
cache: pages evicted by application threads | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_IN_PARALLEL_WITH_CHECKPOINT |
cache: pages evicted in parallel with checkpoint | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_QUEUED |
cache: pages queued for eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_QUEUED_POST_LRU |
cache: pages queued for eviction post lru sorting | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_QUEUED_URGENT |
cache: pages queued for urgent eviction | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_QUEUED_OLDEST |
cache: pages queued for urgent eviction during walk | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_QUEUED_URGENT_HS_DIRTY |
cache: pages queued for urgent eviction from history store due to high dirty content | |
#define | WT_STAT_CONN_CACHE_READ |
cache: pages read into cache | |
#define | WT_STAT_CONN_CACHE_READ_DELETED |
cache: pages read into cache after truncate | |
#define | WT_STAT_CONN_CACHE_READ_DELETED_PREPARED |
cache: pages read into cache after truncate in prepare state | |
#define | WT_STAT_CONN_CACHE_EVICTION_CLEAR_ORDINARY |
cache: pages removed from the ordinary queue to be queued for urgent eviction | |
#define | WT_STAT_CONN_CACHE_PAGES_REQUESTED |
cache: pages requested from the cache | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_SEEN |
cache: pages seen by eviction walk | |
#define | WT_STAT_CONN_CACHE_EVICTION_PAGES_ALREADY_QUEUED |
cache: pages seen by eviction walk that are already queued | |
#define | WT_STAT_CONN_CACHE_EVICTION_FAIL |
cache: pages selected for eviction unable to be evicted | |
#define | WT_STAT_CONN_CACHE_EVICTION_FAIL_ACTIVE_CHILDREN_ON_AN_INTERNAL_PAGE |
cache: pages selected for eviction unable to be evicted because of active children on an internal page | |
#define | WT_STAT_CONN_CACHE_EVICTION_FAIL_IN_RECONCILIATION |
cache: pages selected for eviction unable to be evicted because of failure in reconciliation | |
#define | WT_STAT_CONN_CACHE_EVICTION_FAIL_CHECKPOINT_OUT_OF_ORDER_TS |
cache: pages selected for eviction unable to be evicted because of race between checkpoint and out of order timestamps handling | |
#define | WT_STAT_CONN_CACHE_EVICTION_WALK |
cache: pages walked for eviction | |
#define | WT_STAT_CONN_CACHE_WRITE |
cache: pages written from cache | |
#define | WT_STAT_CONN_CACHE_WRITE_RESTORE |
cache: pages written requiring in-memory restoration | |
#define | WT_STAT_CONN_CACHE_OVERHEAD |
cache: percentage overhead | |
#define | WT_STAT_CONN_CACHE_HS_INSERT_FULL_UPDATE |
cache: the number of times full update inserted to history store | |
#define | WT_STAT_CONN_CACHE_HS_INSERT_REVERSE_MODIFY |
cache: the number of times reverse modify inserted to history store | |
#define | WT_STAT_CONN_CACHE_REENTRY_HS_EVICTION_MILLISECONDS |
cache: total milliseconds spent inside reentrant history store evictions in a reconciliation | |
#define | WT_STAT_CONN_CACHE_BYTES_INTERNAL |
cache: tracked bytes belonging to internal pages in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_LEAF |
cache: tracked bytes belonging to leaf pages in the cache | |
#define | WT_STAT_CONN_CACHE_BYTES_DIRTY |
cache: tracked dirty bytes in the cache | |
#define | WT_STAT_CONN_CACHE_PAGES_DIRTY |
cache: tracked dirty pages in the cache | |
#define | WT_STAT_CONN_CACHE_EVICTION_CLEAN |
cache: unmodified pages evicted | |
#define | WT_STAT_CONN_FSYNC_ALL_FH_TOTAL |
capacity: background fsync file handles considered | |
#define | WT_STAT_CONN_FSYNC_ALL_FH |
capacity: background fsync file handles synced | |
#define | WT_STAT_CONN_FSYNC_ALL_TIME |
capacity: background fsync time (msecs) | |
#define | WT_STAT_CONN_CAPACITY_BYTES_READ |
capacity: bytes read | |
#define | WT_STAT_CONN_CAPACITY_BYTES_CKPT |
capacity: bytes written for checkpoint | |
#define | WT_STAT_CONN_CAPACITY_BYTES_EVICT |
capacity: bytes written for eviction | |
#define | WT_STAT_CONN_CAPACITY_BYTES_LOG |
capacity: bytes written for log | |
#define | WT_STAT_CONN_CAPACITY_BYTES_WRITTEN |
capacity: bytes written total | |
#define | WT_STAT_CONN_CAPACITY_THRESHOLD |
capacity: threshold to call fsync | |
#define | WT_STAT_CONN_CAPACITY_TIME_TOTAL |
capacity: time waiting due to total capacity (usecs) | |
#define | WT_STAT_CONN_CAPACITY_TIME_CKPT |
capacity: time waiting during checkpoint (usecs) | |
#define | WT_STAT_CONN_CAPACITY_TIME_EVICT |
capacity: time waiting during eviction (usecs) | |
#define | WT_STAT_CONN_CAPACITY_TIME_LOG |
capacity: time waiting during logging (usecs) | |
#define | WT_STAT_CONN_CAPACITY_TIME_READ |
capacity: time waiting during read (usecs) | |
#define | WT_STAT_CONN_CC_PAGES_EVICT |
checkpoint-cleanup: pages added for eviction | |
#define | WT_STAT_CONN_CC_PAGES_REMOVED |
checkpoint-cleanup: pages removed | |
#define | WT_STAT_CONN_CC_PAGES_WALK_SKIPPED |
checkpoint-cleanup: pages skipped during tree walk | |
#define | WT_STAT_CONN_CC_PAGES_VISITED |
checkpoint-cleanup: pages visited | |
#define | WT_STAT_CONN_COND_AUTO_WAIT_RESET |
connection: auto adjusting condition resets | |
#define | WT_STAT_CONN_COND_AUTO_WAIT |
connection: auto adjusting condition wait calls | |
#define | WT_STAT_CONN_COND_AUTO_WAIT_SKIPPED |
connection: auto adjusting condition wait raced to update timeout and skipped updating | |
#define | WT_STAT_CONN_TIME_TRAVEL |
connection: detected system time went backwards | |
#define | WT_STAT_CONN_FILE_OPEN |
connection: files currently open | |
#define | WT_STAT_CONN_BUCKETS_DH |
connection: hash bucket array size for data handles | |
#define | WT_STAT_CONN_BUCKETS |
connection: hash bucket array size general | |
#define | WT_STAT_CONN_MEMORY_ALLOCATION |
connection: memory allocations | |
#define | WT_STAT_CONN_MEMORY_FREE |
connection: memory frees | |
#define | WT_STAT_CONN_MEMORY_GROW |
connection: memory re-allocations | |
#define | WT_STAT_CONN_COND_WAIT |
connection: pthread mutex condition wait calls | |
#define | WT_STAT_CONN_RWLOCK_READ |
connection: pthread mutex shared lock read-lock calls | |
#define | WT_STAT_CONN_RWLOCK_WRITE |
connection: pthread mutex shared lock write-lock calls | |
#define | WT_STAT_CONN_FSYNC_IO |
connection: total fsync I/Os | |
#define | WT_STAT_CONN_READ_IO |
connection: total read I/Os | |
#define | WT_STAT_CONN_WRITE_IO |
connection: total write I/Os | |
#define | WT_STAT_CONN_CURSOR_TREE_WALK_DEL_PAGE_SKIP |
cursor: Total number of deleted pages skipped during tree walk | |
#define | WT_STAT_CONN_CURSOR_NEXT_SKIP_TOTAL |
cursor: Total number of entries skipped by cursor next calls | |
#define | WT_STAT_CONN_CURSOR_PREV_SKIP_TOTAL |
cursor: Total number of entries skipped by cursor prev calls | |
#define | WT_STAT_CONN_CURSOR_SKIP_HS_CUR_POSITION |
cursor: Total number of entries skipped to position the history store cursor | |
#define | WT_STAT_CONN_CURSOR_TREE_WALK_INMEM_DEL_PAGE_SKIP |
cursor: Total number of in-memory deleted pages skipped during tree walk | |
#define | WT_STAT_CONN_CURSOR_SEARCH_NEAR_PREFIX_FAST_PATHS |
cursor: Total number of times a search near has exited due to prefix config | |
#define | WT_STAT_CONN_CURSOR_CACHED_COUNT |
cursor: cached cursor count | |
#define | WT_STAT_CONN_CURSOR_INSERT_BULK |
cursor: cursor bulk loaded cursor insert calls | |
#define | WT_STAT_CONN_CURSOR_CACHE |
cursor: cursor close calls that result in cache | |
#define | WT_STAT_CONN_CURSOR_CREATE |
cursor: cursor create calls | |
#define | WT_STAT_CONN_CURSOR_INSERT |
cursor: cursor insert calls | |
#define | WT_STAT_CONN_CURSOR_INSERT_BYTES |
cursor: cursor insert key and value bytes | |
#define | WT_STAT_CONN_CURSOR_MODIFY |
cursor: cursor modify calls | |
#define | WT_STAT_CONN_CURSOR_MODIFY_BYTES |
cursor: cursor modify key and value bytes affected | |
#define | WT_STAT_CONN_CURSOR_MODIFY_BYTES_TOUCH |
cursor: cursor modify value bytes modified | |
#define | WT_STAT_CONN_CURSOR_NEXT |
cursor: cursor next calls | |
#define | WT_STAT_CONN_CURSOR_NEXT_HS_TOMBSTONE |
cursor: cursor next calls that skip due to a globally visible history store tombstone | |
#define | WT_STAT_CONN_CURSOR_NEXT_SKIP_GE_100 |
cursor: cursor next calls that skip greater than or equal to 100 entries | |
#define | WT_STAT_CONN_CURSOR_NEXT_SKIP_LT_100 |
cursor: cursor next calls that skip less than 100 entries | |
#define | WT_STAT_CONN_CURSOR_RESTART |
cursor: cursor operation restarted | |
#define | WT_STAT_CONN_CURSOR_PREV |
cursor: cursor prev calls | |
#define | WT_STAT_CONN_CURSOR_PREV_HS_TOMBSTONE |
cursor: cursor prev calls that skip due to a globally visible history store tombstone | |
#define | WT_STAT_CONN_CURSOR_PREV_SKIP_GE_100 |
cursor: cursor prev calls that skip greater than or equal to 100 entries | |
#define | WT_STAT_CONN_CURSOR_PREV_SKIP_LT_100 |
cursor: cursor prev calls that skip less than 100 entries | |
#define | WT_STAT_CONN_CURSOR_REMOVE |
cursor: cursor remove calls | |
#define | WT_STAT_CONN_CURSOR_REMOVE_BYTES |
cursor: cursor remove key bytes removed | |
#define | WT_STAT_CONN_CURSOR_RESERVE |
cursor: cursor reserve calls | |
#define | WT_STAT_CONN_CURSOR_RESET |
cursor: cursor reset calls | |
#define | WT_STAT_CONN_CURSOR_SEARCH |
cursor: cursor search calls | |
#define | WT_STAT_CONN_CURSOR_SEARCH_HS |
cursor: cursor search history store calls | |
#define | WT_STAT_CONN_CURSOR_SEARCH_NEAR |
cursor: cursor search near calls | |
#define | WT_STAT_CONN_CURSOR_SWEEP_BUCKETS |
cursor: cursor sweep buckets | |
#define | WT_STAT_CONN_CURSOR_SWEEP_CLOSED |
cursor: cursor sweep cursors closed | |
#define | WT_STAT_CONN_CURSOR_SWEEP_EXAMINED |
cursor: cursor sweep cursors examined | |
#define | WT_STAT_CONN_CURSOR_SWEEP |
cursor: cursor sweeps | |
#define | WT_STAT_CONN_CURSOR_TRUNCATE |
cursor: cursor truncate calls | |
#define | WT_STAT_CONN_CURSOR_UPDATE |
cursor: cursor update calls | |
#define | WT_STAT_CONN_CURSOR_UPDATE_BYTES |
cursor: cursor update key and value bytes | |
#define | WT_STAT_CONN_CURSOR_UPDATE_BYTES_CHANGED |
cursor: cursor update value size change | |
#define | WT_STAT_CONN_CURSOR_REOPEN |
cursor: cursors reused from cache | |
#define | WT_STAT_CONN_CURSOR_OPEN_COUNT |
cursor: open cursor count | |
#define | WT_STAT_CONN_DH_CONN_HANDLE_SIZE |
data-handle: connection data handle size | |
#define | WT_STAT_CONN_DH_CONN_HANDLE_COUNT |
data-handle: connection data handles currently active | |
#define | WT_STAT_CONN_DH_SWEEP_REF |
data-handle: connection sweep candidate became referenced | |
#define | WT_STAT_CONN_DH_SWEEP_CLOSE |
data-handle: connection sweep dhandles closed | |
#define | WT_STAT_CONN_DH_SWEEP_REMOVE |
data-handle: connection sweep dhandles removed from hash list | |
#define | WT_STAT_CONN_DH_SWEEP_TOD |
data-handle: connection sweep time-of-death sets | |
#define | WT_STAT_CONN_DH_SWEEPS |
data-handle: connection sweeps | |
#define | WT_STAT_CONN_DH_SWEEP_SKIP_CKPT |
data-handle: connection sweeps skipped due to checkpoint gathering handles | |
#define | WT_STAT_CONN_DH_SESSION_HANDLES |
data-handle: session dhandles swept | |
#define | WT_STAT_CONN_DH_SESSION_SWEEPS |
data-handle: session sweep attempts | |
#define | WT_STAT_CONN_LOCK_CHECKPOINT_COUNT |
lock: checkpoint lock acquisitions | |
#define | WT_STAT_CONN_LOCK_CHECKPOINT_WAIT_APPLICATION |
lock: checkpoint lock application thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_CHECKPOINT_WAIT_INTERNAL |
lock: checkpoint lock internal thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_DHANDLE_WAIT_APPLICATION |
lock: dhandle lock application thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_DHANDLE_WAIT_INTERNAL |
lock: dhandle lock internal thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_DHANDLE_READ_COUNT |
lock: dhandle read lock acquisitions | |
#define | WT_STAT_CONN_LOCK_DHANDLE_WRITE_COUNT |
lock: dhandle write lock acquisitions | |
#define | WT_STAT_CONN_LOCK_DURABLE_TIMESTAMP_WAIT_APPLICATION |
lock: durable timestamp queue lock application thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_DURABLE_TIMESTAMP_WAIT_INTERNAL |
lock: durable timestamp queue lock internal thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_DURABLE_TIMESTAMP_READ_COUNT |
lock: durable timestamp queue read lock acquisitions | |
#define | WT_STAT_CONN_LOCK_DURABLE_TIMESTAMP_WRITE_COUNT |
lock: durable timestamp queue write lock acquisitions | |
#define | WT_STAT_CONN_LOCK_METADATA_COUNT |
lock: metadata lock acquisitions | |
#define | WT_STAT_CONN_LOCK_METADATA_WAIT_APPLICATION |
lock: metadata lock application thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_METADATA_WAIT_INTERNAL |
lock: metadata lock internal thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_READ_TIMESTAMP_WAIT_APPLICATION |
lock: read timestamp queue lock application thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_READ_TIMESTAMP_WAIT_INTERNAL |
lock: read timestamp queue lock internal thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_READ_TIMESTAMP_READ_COUNT |
lock: read timestamp queue read lock acquisitions | |
#define | WT_STAT_CONN_LOCK_READ_TIMESTAMP_WRITE_COUNT |
lock: read timestamp queue write lock acquisitions | |
#define | WT_STAT_CONN_LOCK_SCHEMA_COUNT |
lock: schema lock acquisitions | |
#define | WT_STAT_CONN_LOCK_SCHEMA_WAIT_APPLICATION |
lock: schema lock application thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_SCHEMA_WAIT_INTERNAL |
lock: schema lock internal thread wait time (usecs) | |
#define | WT_STAT_CONN_LOCK_TABLE_WAIT_APPLICATION |
lock: table lock application thread time waiting for the table lock (usecs) | |
#define | WT_STAT_CONN_LOCK_TABLE_WAIT_INTERNAL |
lock: table lock internal thread time waiting for the table lock (usecs) | |
#define | WT_STAT_CONN_LOCK_TABLE_READ_COUNT |
lock: table read lock acquisitions | |
#define | WT_STAT_CONN_LOCK_TABLE_WRITE_COUNT |
lock: table write lock acquisitions | |
#define | WT_STAT_CONN_LOCK_TXN_GLOBAL_WAIT_APPLICATION |
lock: txn global lock application thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_TXN_GLOBAL_WAIT_INTERNAL |
lock: txn global lock internal thread time waiting (usecs) | |
#define | WT_STAT_CONN_LOCK_TXN_GLOBAL_READ_COUNT |
lock: txn global read lock acquisitions | |
#define | WT_STAT_CONN_LOCK_TXN_GLOBAL_WRITE_COUNT |
lock: txn global write lock acquisitions | |
#define | WT_STAT_CONN_LOG_SLOT_SWITCH_BUSY |
log: busy returns attempting to switch slots | |
#define | WT_STAT_CONN_LOG_FORCE_ARCHIVE_SLEEP |
log: force archive time sleeping (usecs) | |
#define | WT_STAT_CONN_LOG_BYTES_PAYLOAD |
log: log bytes of payload data | |
#define | WT_STAT_CONN_LOG_BYTES_WRITTEN |
log: log bytes written | |
#define | WT_STAT_CONN_LOG_ZERO_FILLS |
log: log files manually zero-filled | |
#define | WT_STAT_CONN_LOG_FLUSH |
log: log flush operations | |
#define | WT_STAT_CONN_LOG_FORCE_WRITE |
log: log force write operations | |
#define | WT_STAT_CONN_LOG_FORCE_WRITE_SKIP |
log: log force write operations skipped | |
#define | WT_STAT_CONN_LOG_COMPRESS_WRITES |
log: log records compressed | |
#define | WT_STAT_CONN_LOG_COMPRESS_WRITE_FAILS |
log: log records not compressed | |
#define | WT_STAT_CONN_LOG_COMPRESS_SMALL |
log: log records too small to compress | |
#define | WT_STAT_CONN_LOG_RELEASE_WRITE_LSN |
log: log release advances write LSN | |
#define | WT_STAT_CONN_LOG_SCANS |
log: log scan operations | |
#define | WT_STAT_CONN_LOG_SCAN_REREADS |
log: log scan records requiring two reads | |
#define | WT_STAT_CONN_LOG_WRITE_LSN |
log: log server thread advances write LSN | |
#define | WT_STAT_CONN_LOG_WRITE_LSN_SKIP |
log: log server thread write LSN walk skipped | |
#define | WT_STAT_CONN_LOG_SYNC |
log: log sync operations | |
#define | WT_STAT_CONN_LOG_SYNC_DURATION |
log: log sync time duration (usecs) | |
#define | WT_STAT_CONN_LOG_SYNC_DIR |
log: log sync_dir operations | |
#define | WT_STAT_CONN_LOG_SYNC_DIR_DURATION |
log: log sync_dir time duration (usecs) | |
#define | WT_STAT_CONN_LOG_WRITES |
log: log write operations | |
#define | WT_STAT_CONN_LOG_SLOT_CONSOLIDATED |
log: logging bytes consolidated | |
#define | WT_STAT_CONN_LOG_MAX_FILESIZE |
log: maximum log file size | |
#define | WT_STAT_CONN_LOG_PREALLOC_MAX |
log: number of pre-allocated log files to create | |
#define | WT_STAT_CONN_LOG_PREALLOC_MISSED |
log: pre-allocated log files not ready and missed | |
#define | WT_STAT_CONN_LOG_PREALLOC_FILES |
log: pre-allocated log files prepared | |
#define | WT_STAT_CONN_LOG_PREALLOC_USED |
log: pre-allocated log files used | |
#define | WT_STAT_CONN_LOG_SCAN_RECORDS |
log: records processed by log scan | |
#define | WT_STAT_CONN_LOG_SLOT_CLOSE_RACE |
log: slot close lost race | |
#define | WT_STAT_CONN_LOG_SLOT_CLOSE_UNBUF |
log: slot close unbuffered waits | |
#define | WT_STAT_CONN_LOG_SLOT_CLOSES |
log: slot closures | |
#define | WT_STAT_CONN_LOG_SLOT_RACES |
log: slot join atomic update races | |
#define | WT_STAT_CONN_LOG_SLOT_YIELD_RACE |
log: slot join calls atomic updates raced | |
#define | WT_STAT_CONN_LOG_SLOT_IMMEDIATE |
log: slot join calls did not yield | |
#define | WT_STAT_CONN_LOG_SLOT_YIELD_CLOSE |
log: slot join calls found active slot closed | |
#define | WT_STAT_CONN_LOG_SLOT_YIELD_SLEEP |
log: slot join calls slept | |
#define | WT_STAT_CONN_LOG_SLOT_YIELD |
log: slot join calls yielded | |
#define | WT_STAT_CONN_LOG_SLOT_ACTIVE_CLOSED |
log: slot join found active slot closed | |
#define | WT_STAT_CONN_LOG_SLOT_YIELD_DURATION |
log: slot joins yield time (usecs) | |
#define | WT_STAT_CONN_LOG_SLOT_NO_FREE_SLOTS |
log: slot transitions unable to find free slot | |
#define | WT_STAT_CONN_LOG_SLOT_UNBUFFERED |
log: slot unbuffered writes | |
#define | WT_STAT_CONN_LOG_COMPRESS_MEM |
log: total in-memory size of compressed records | |
#define | WT_STAT_CONN_LOG_BUFFER_SIZE |
log: total log buffer size | |
#define | WT_STAT_CONN_LOG_COMPRESS_LEN |
log: total size of compressed records | |
#define | WT_STAT_CONN_LOG_SLOT_COALESCED |
log: written slots coalesced | |
#define | WT_STAT_CONN_LOG_CLOSE_YIELDS |
log: yields waiting for previous log file close | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_LT50 |
perf: file system read latency histogram (bucket 1) - 10-49ms | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_LT100 |
perf: file system read latency histogram (bucket 2) - 50-99ms | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_LT250 |
perf: file system read latency histogram (bucket 3) - 100-249ms | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_LT500 |
perf: file system read latency histogram (bucket 4) - 250-499ms | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_LT1000 |
perf: file system read latency histogram (bucket 5) - 500-999ms | |
#define | WT_STAT_CONN_PERF_HIST_FSREAD_LATENCY_GT1000 |
perf: file system read latency histogram (bucket 6) - 1000ms+ | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_LT50 |
perf: file system write latency histogram (bucket 1) - 10-49ms | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_LT100 |
perf: file system write latency histogram (bucket 2) - 50-99ms | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_LT250 |
perf: file system write latency histogram (bucket 3) - 100-249ms | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_LT500 |
perf: file system write latency histogram (bucket 4) - 250-499ms | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_LT1000 |
perf: file system write latency histogram (bucket 5) - 500-999ms | |
#define | WT_STAT_CONN_PERF_HIST_FSWRITE_LATENCY_GT1000 |
perf: file system write latency histogram (bucket 6) - 1000ms+ | |
#define | WT_STAT_CONN_PERF_HIST_OPREAD_LATENCY_LT250 |
perf: operation read latency histogram (bucket 1) - 100-249us | |
#define | WT_STAT_CONN_PERF_HIST_OPREAD_LATENCY_LT500 |
perf: operation read latency histogram (bucket 2) - 250-499us | |
#define | WT_STAT_CONN_PERF_HIST_OPREAD_LATENCY_LT1000 |
perf: operation read latency histogram (bucket 3) - 500-999us | |
#define | WT_STAT_CONN_PERF_HIST_OPREAD_LATENCY_LT10000 |
perf: operation read latency histogram (bucket 4) - 1000-9999us | |
#define | WT_STAT_CONN_PERF_HIST_OPREAD_LATENCY_GT10000 |
perf: operation read latency histogram (bucket 5) - 10000us+ | |
#define | WT_STAT_CONN_PERF_HIST_OPWRITE_LATENCY_LT250 |
perf: operation write latency histogram (bucket 1) - 100-249us | |
#define | WT_STAT_CONN_PERF_HIST_OPWRITE_LATENCY_LT500 |
perf: operation write latency histogram (bucket 2) - 250-499us | |
#define | WT_STAT_CONN_PERF_HIST_OPWRITE_LATENCY_LT1000 |
perf: operation write latency histogram (bucket 3) - 500-999us | |
#define | WT_STAT_CONN_PERF_HIST_OPWRITE_LATENCY_LT10000 |
perf: operation write latency histogram (bucket 4) - 1000-9999us | |
#define | WT_STAT_CONN_PERF_HIST_OPWRITE_LATENCY_GT10000 |
perf: operation write latency histogram (bucket 5) - 10000us+ | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_BYTES_TS |
reconciliation: approximate byte size of timestamps in pages written | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_BYTES_TXN |
reconciliation: approximate byte size of transaction IDs in pages written | |
#define | WT_STAT_CONN_REC_PAGE_DELETE_FAST |
reconciliation: fast-path pages deleted | |
#define | WT_STAT_CONN_REC_OVERFLOW_KEY_LEAF |
reconciliation: leaf-page overflow keys | |
#define | WT_STAT_CONN_REC_MAXIMUM_MILLISECONDS |
reconciliation: maximum milliseconds spent in a reconciliation call | |
#define | WT_STAT_CONN_REC_MAXIMUM_IMAGE_BUILD_MILLISECONDS |
reconciliation: maximum milliseconds spent in building a disk image in a reconciliation | |
#define | WT_STAT_CONN_REC_MAXIMUM_HS_WRAPUP_MILLISECONDS |
reconciliation: maximum milliseconds spent in moving updates to the history store in a reconciliation | |
#define | WT_STAT_CONN_REC_PAGES |
reconciliation: page reconciliation calls | |
#define | WT_STAT_CONN_REC_PAGES_EVICTION |
reconciliation: page reconciliation calls for eviction | |
#define | WT_STAT_CONN_REC_PAGES_WITH_PREPARE |
reconciliation: page reconciliation calls that resulted in values with prepared transaction metadata | |
#define | WT_STAT_CONN_REC_PAGES_WITH_TS |
reconciliation: page reconciliation calls that resulted in values with timestamps | |
#define | WT_STAT_CONN_REC_PAGES_WITH_TXN |
reconciliation: page reconciliation calls that resulted in values with transaction ids | |
#define | WT_STAT_CONN_REC_PAGE_DELETE |
reconciliation: pages deleted | |
#define | WT_STAT_CONN_REC_TIME_AGGR_NEWEST_START_DURABLE_TS |
reconciliation: pages written including an aggregated newest start durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_AGGR_NEWEST_STOP_DURABLE_TS |
reconciliation: pages written including an aggregated newest stop durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_AGGR_NEWEST_STOP_TS |
reconciliation: pages written including an aggregated newest stop timestamp | |
#define | WT_STAT_CONN_REC_TIME_AGGR_NEWEST_STOP_TXN |
reconciliation: pages written including an aggregated newest stop transaction ID | |
#define | WT_STAT_CONN_REC_TIME_AGGR_NEWEST_TXN |
reconciliation: pages written including an aggregated newest transaction ID | |
#define | WT_STAT_CONN_REC_TIME_AGGR_OLDEST_START_TS |
reconciliation: pages written including an aggregated oldest start timestamp | |
#define | WT_STAT_CONN_REC_TIME_AGGR_PREPARED |
reconciliation: pages written including an aggregated prepare | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_PREPARED |
reconciliation: pages written including at least one prepare state | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_DURABLE_START_TS |
reconciliation: pages written including at least one start durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_START_TS |
reconciliation: pages written including at least one start timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_START_TXN |
reconciliation: pages written including at least one start transaction ID | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_DURABLE_STOP_TS |
reconciliation: pages written including at least one stop durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_STOP_TS |
reconciliation: pages written including at least one stop timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PAGES_STOP_TXN |
reconciliation: pages written including at least one stop transaction ID | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_PREPARED |
reconciliation: records written including a prepare state | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_DURABLE_START_TS |
reconciliation: records written including a start durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_START_TS |
reconciliation: records written including a start timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_START_TXN |
reconciliation: records written including a start transaction ID | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_DURABLE_STOP_TS |
reconciliation: records written including a stop durable timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_STOP_TS |
reconciliation: records written including a stop timestamp | |
#define | WT_STAT_CONN_REC_TIME_WINDOW_STOP_TXN |
reconciliation: records written including a stop transaction ID | |
#define | WT_STAT_CONN_REC_SPLIT_STASHED_BYTES |
reconciliation: split bytes currently awaiting free | |
#define | WT_STAT_CONN_REC_SPLIT_STASHED_OBJECTS |
reconciliation: split objects currently awaiting free | |
#define | WT_STAT_CONN_LOCAL_OBJECTS_INUSE |
session: attempts to remove a local object and the object is in use | |
#define | WT_STAT_CONN_FLUSH_TIER |
session: flush_tier operation calls | |
#define | WT_STAT_CONN_LOCAL_OBJECTS_REMOVED |
session: local objects removed | |
#define | WT_STAT_CONN_SESSION_OPEN |
session: open session count | |
#define | WT_STAT_CONN_SESSION_QUERY_TS |
session: session query timestamp calls | |
#define | WT_STAT_CONN_SESSION_TABLE_ALTER_FAIL |
session: table alter failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_ALTER_SUCCESS |
session: table alter successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_ALTER_TRIGGER_CHECKPOINT |
session: table alter triggering checkpoint calls | |
#define | WT_STAT_CONN_SESSION_TABLE_ALTER_SKIP |
session: table alter unchanged and skipped | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_FAIL |
session: table compact failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_FAIL_CACHE_PRESSURE |
session: table compact failed calls due to cache pressure | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_RUNNING |
session: table compact running | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_SKIPPED |
session: table compact skipped as process would not reduce file size | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_SUCCESS |
session: table compact successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_COMPACT_TIMEOUT |
session: table compact timeout | |
#define | WT_STAT_CONN_SESSION_TABLE_CREATE_FAIL |
session: table create failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_CREATE_SUCCESS |
session: table create successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_DROP_FAIL |
session: table drop failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_DROP_SUCCESS |
session: table drop successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_RENAME_FAIL |
session: table rename failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_RENAME_SUCCESS |
session: table rename successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_SALVAGE_FAIL |
session: table salvage failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_SALVAGE_SUCCESS |
session: table salvage successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_TRUNCATE_FAIL |
session: table truncate failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_TRUNCATE_SUCCESS |
session: table truncate successful calls | |
#define | WT_STAT_CONN_SESSION_TABLE_VERIFY_FAIL |
session: table verify failed calls | |
#define | WT_STAT_CONN_SESSION_TABLE_VERIFY_SUCCESS |
session: table verify successful calls | |
#define | WT_STAT_CONN_TIERED_WORK_UNITS_DEQUEUED |
session: tiered operations dequeued and processed | |
#define | WT_STAT_CONN_TIERED_WORK_UNITS_CREATED |
session: tiered operations scheduled | |
#define | WT_STAT_CONN_TIERED_RETENTION |
session: tiered storage local retention time (secs) | |
#define | WT_STAT_CONN_THREAD_FSYNC_ACTIVE |
thread-state: active filesystem fsync calls | |
#define | WT_STAT_CONN_THREAD_READ_ACTIVE |
thread-state: active filesystem read calls | |
#define | WT_STAT_CONN_THREAD_WRITE_ACTIVE |
thread-state: active filesystem write calls | |
#define | WT_STAT_CONN_APPLICATION_EVICT_TIME |
thread-yield: application thread time evicting (usecs) | |
#define | WT_STAT_CONN_APPLICATION_CACHE_TIME |
thread-yield: application thread time waiting for cache (usecs) | |
#define | WT_STAT_CONN_TXN_RELEASE_BLOCKED |
thread-yield: connection close blocked waiting for transaction state stabilization | |
#define | WT_STAT_CONN_CONN_CLOSE_BLOCKED_LSM |
thread-yield: connection close yielded for lsm manager shutdown | |
#define | WT_STAT_CONN_DHANDLE_LOCK_BLOCKED |
thread-yield: data handle lock yielded | |
#define | WT_STAT_CONN_PAGE_INDEX_SLOT_REF_BLOCKED |
thread-yield: get reference for page index and slot time sleeping (usecs) | |
#define | WT_STAT_CONN_PREPARED_TRANSITION_BLOCKED_PAGE |
thread-yield: page access yielded due to prepare state change | |
#define | WT_STAT_CONN_PAGE_BUSY_BLOCKED |
thread-yield: page acquire busy blocked | |
#define | WT_STAT_CONN_PAGE_FORCIBLE_EVICT_BLOCKED |
thread-yield: page acquire eviction blocked | |
#define | WT_STAT_CONN_PAGE_LOCKED_BLOCKED |
thread-yield: page acquire locked blocked | |
#define | WT_STAT_CONN_PAGE_READ_BLOCKED |
thread-yield: page acquire read blocked | |
#define | WT_STAT_CONN_PAGE_SLEEP |
thread-yield: page acquire time sleeping (usecs) | |
#define | WT_STAT_CONN_PAGE_DEL_ROLLBACK_BLOCKED |
thread-yield: page delete rollback time sleeping for state change (usecs) | |
#define | WT_STAT_CONN_CHILD_MODIFY_BLOCKED_PAGE |
thread-yield: page reconciliation yielded due to child modification | |
#define | WT_STAT_CONN_TXN_PREPARED_UPDATES |
transaction: Number of prepared updates | |
#define | WT_STAT_CONN_TXN_PREPARED_UPDATES_COMMITTED |
transaction: Number of prepared updates committed | |
#define | WT_STAT_CONN_TXN_PREPARED_UPDATES_KEY_REPEATED |
transaction: Number of prepared updates repeated on the same key | |
#define | WT_STAT_CONN_TXN_PREPARED_UPDATES_ROLLEDBACK |
transaction: Number of prepared updates rolled back | |
#define | WT_STAT_CONN_TXN_ROLLBACK_OLDEST_PINNED |
transaction: oldest pinned transaction ID rolled back for eviction | |
#define | WT_STAT_CONN_TXN_PREPARE |
transaction: prepared transactions | |
#define | WT_STAT_CONN_TXN_PREPARE_COMMIT |
transaction: prepared transactions committed | |
#define | WT_STAT_CONN_TXN_PREPARE_ACTIVE |
transaction: prepared transactions currently active | |
#define | WT_STAT_CONN_TXN_PREPARE_ROLLBACK |
transaction: prepared transactions rolled back | |
#define | WT_STAT_CONN_TXN_QUERY_TS |
transaction: query timestamp calls | |
#define | WT_STAT_CONN_TXN_READ_RACE_PREPARE_UPDATE |
transaction: race to read prepared update retry | |
#define | WT_STAT_CONN_TXN_RTS |
transaction: rollback to stable calls | |
#define | WT_STAT_CONN_TXN_RTS_HS_STOP_OLDER_THAN_NEWER_START |
transaction: rollback to stable history store records with stop timestamps older than newer records | |
#define | WT_STAT_CONN_TXN_RTS_INCONSISTENT_CKPT |
transaction: rollback to stable inconsistent checkpoint | |
#define | WT_STAT_CONN_TXN_RTS_KEYS_REMOVED |
transaction: rollback to stable keys removed | |
#define | WT_STAT_CONN_TXN_RTS_KEYS_RESTORED |
transaction: rollback to stable keys restored | |
#define | WT_STAT_CONN_TXN_RTS_PAGES_VISITED |
transaction: rollback to stable pages visited | |
#define | WT_STAT_CONN_TXN_RTS_HS_RESTORE_TOMBSTONES |
transaction: rollback to stable restored tombstones from history store | |
#define | WT_STAT_CONN_TXN_RTS_HS_RESTORE_UPDATES |
transaction: rollback to stable restored updates from history store | |
#define | WT_STAT_CONN_TXN_RTS_DELETE_RLE_SKIPPED |
transaction: rollback to stable skipping delete rle | |
#define | WT_STAT_CONN_TXN_RTS_STABLE_RLE_SKIPPED |
transaction: rollback to stable skipping stable rle | |
#define | WT_STAT_CONN_TXN_RTS_SWEEP_HS_KEYS |
transaction: rollback to stable sweeping history store keys | |
#define | WT_STAT_CONN_TXN_RTS_TREE_WALK_SKIP_PAGES |
transaction: rollback to stable tree walk skipping pages | |
#define | WT_STAT_CONN_TXN_RTS_UPD_ABORTED |
transaction: rollback to stable updates aborted | |
#define | WT_STAT_CONN_TXN_RTS_HS_REMOVED |
transaction: rollback to stable updates removed from history store | |
#define | WT_STAT_CONN_TXN_SESSIONS_WALKED |
transaction: sessions scanned in each walk of concurrent sessions | |
#define | WT_STAT_CONN_TXN_SET_TS |
transaction: set timestamp calls | |
#define | WT_STAT_CONN_TXN_SET_TS_DURABLE |
transaction: set timestamp durable calls | |
#define | WT_STAT_CONN_TXN_SET_TS_DURABLE_UPD |
transaction: set timestamp durable updates | |
#define | WT_STAT_CONN_TXN_SET_TS_OLDEST |
transaction: set timestamp oldest calls | |
#define | WT_STAT_CONN_TXN_SET_TS_OLDEST_UPD |
transaction: set timestamp oldest updates | |
#define | WT_STAT_CONN_TXN_SET_TS_STABLE |
transaction: set timestamp stable calls | |
#define | WT_STAT_CONN_TXN_SET_TS_STABLE_UPD |
transaction: set timestamp stable updates | |
#define | WT_STAT_CONN_TXN_BEGIN |
transaction: transaction begins | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_RUNNING |
transaction: transaction checkpoint currently running | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_RUNNING_HS |
transaction: transaction checkpoint currently running for history store file | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_GENERATION |
transaction: transaction checkpoint generation | |
#define | WT_STAT_CONN_TXN_HS_CKPT_DURATION |
transaction: transaction checkpoint history store file duration (usecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_TIME_MAX |
transaction: transaction checkpoint max time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_TIME_MIN |
transaction: transaction checkpoint min time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_DURATION |
transaction: transaction checkpoint most recent duration for gathering all handles (usecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_DURATION_APPLY |
transaction: transaction checkpoint most recent duration for gathering applied handles (usecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_DURATION_SKIP |
transaction: transaction checkpoint most recent duration for gathering skipped handles (usecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_APPLIED |
transaction: transaction checkpoint most recent handles applied | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_SKIPPED |
transaction: transaction checkpoint most recent handles skipped | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_HANDLE_WALKED |
transaction: transaction checkpoint most recent handles walked | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_TIME_RECENT |
transaction: transaction checkpoint most recent time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_PREP_RUNNING |
transaction: transaction checkpoint prepare currently running | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_PREP_MAX |
transaction: transaction checkpoint prepare max time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_PREP_MIN |
transaction: transaction checkpoint prepare min time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_PREP_RECENT |
transaction: transaction checkpoint prepare most recent time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_PREP_TOTAL |
transaction: transaction checkpoint prepare total time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_SCRUB_TARGET |
transaction: transaction checkpoint scrub dirty target | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_SCRUB_TIME |
transaction: transaction checkpoint scrub time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_STOP_STRESS_ACTIVE |
transaction: transaction checkpoint stop timing stress active | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_TIME_TOTAL |
transaction: transaction checkpoint total time (msecs) | |
#define | WT_STAT_CONN_TXN_CHECKPOINT |
transaction: transaction checkpoints | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_OBSOLETE_APPLIED |
transaction: transaction checkpoints due to obsolete pages | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_SKIPPED |
transaction: transaction checkpoints skipped because database was clean | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_FSYNC_POST |
transaction: transaction fsync calls for checkpoint after allocating the transaction ID | |
#define | WT_STAT_CONN_TXN_CHECKPOINT_FSYNC_POST_DURATION |
transaction: transaction fsync duration for checkpoint after allocating the transaction ID (usecs) | |
#define | WT_STAT_CONN_TXN_PINNED_RANGE |
transaction: transaction range of IDs currently pinned | |
#define | WT_STAT_CONN_TXN_PINNED_CHECKPOINT_RANGE |
transaction: transaction range of IDs currently pinned by a checkpoint | |
#define | WT_STAT_CONN_TXN_PINNED_TIMESTAMP |
transaction: transaction range of timestamps currently pinned | |
#define | WT_STAT_CONN_TXN_PINNED_TIMESTAMP_CHECKPOINT |
transaction: transaction range of timestamps pinned by a checkpoint | |
#define | WT_STAT_CONN_TXN_PINNED_TIMESTAMP_READER |
transaction: transaction range of timestamps pinned by the oldest active read timestamp | |
#define | WT_STAT_CONN_TXN_PINNED_TIMESTAMP_OLDEST |
transaction: transaction range of timestamps pinned by the oldest timestamp | |
#define | WT_STAT_CONN_TXN_TIMESTAMP_OLDEST_ACTIVE_READ |
transaction: transaction read timestamp of the oldest active reader | |
#define | WT_STAT_CONN_TXN_ROLLBACK_TO_STABLE_RUNNING |
transaction: transaction rollback to stable currently running | |
#define | WT_STAT_CONN_TXN_WALK_SESSIONS |
transaction: transaction walk of concurrent sessions | |
#define | WT_STAT_CONN_TXN_COMMIT |
transaction: transactions committed | |
#define | WT_STAT_CONN_TXN_ROLLBACK |
transaction: transactions rolled back | |
#define | WT_STAT_CONN_TXN_UPDATE_CONFLICT |
transaction: update conflicts | |
Statistics for data sources | |
#define | WT_STAT_DSRC_BLOOM_FALSE_POSITIVE |
LSM: bloom filter false positives. | |
#define | WT_STAT_DSRC_BLOOM_HIT |
LSM: bloom filter hits. | |
#define | WT_STAT_DSRC_BLOOM_MISS |
LSM: bloom filter misses. | |
#define | WT_STAT_DSRC_BLOOM_PAGE_EVICT |
LSM: bloom filter pages evicted from cache. | |
#define | WT_STAT_DSRC_BLOOM_PAGE_READ |
LSM: bloom filter pages read into cache. | |
#define | WT_STAT_DSRC_BLOOM_COUNT |
LSM: bloom filters in the LSM tree. | |
#define | WT_STAT_DSRC_LSM_CHUNK_COUNT |
LSM: chunks in the LSM tree. | |
#define | WT_STAT_DSRC_LSM_GENERATION_MAX |
LSM: highest merge generation in the LSM tree. | |
#define | WT_STAT_DSRC_LSM_LOOKUP_NO_BLOOM |
LSM: queries that could have benefited from a Bloom filter that did not exist. | |
#define | WT_STAT_DSRC_LSM_CHECKPOINT_THROTTLE |
LSM: sleep for LSM checkpoint throttle. | |
#define | WT_STAT_DSRC_LSM_MERGE_THROTTLE |
LSM: sleep for LSM merge throttle. | |
#define | WT_STAT_DSRC_BLOOM_SIZE |
LSM: total size of bloom filters. | |
#define | WT_STAT_DSRC_BLOCK_EXTENSION |
block-manager: allocations requiring file extension | |
#define | WT_STAT_DSRC_BLOCK_ALLOC |
block-manager: blocks allocated | |
#define | WT_STAT_DSRC_BLOCK_FREE |
block-manager: blocks freed | |
#define | WT_STAT_DSRC_BLOCK_CHECKPOINT_SIZE |
block-manager: checkpoint size | |
#define | WT_STAT_DSRC_ALLOCATION_SIZE |
block-manager: file allocation unit size | |
#define | WT_STAT_DSRC_BLOCK_REUSE_BYTES |
block-manager: file bytes available for reuse | |
#define | WT_STAT_DSRC_BLOCK_MAGIC |
block-manager: file magic number | |
#define | WT_STAT_DSRC_BLOCK_MAJOR |
block-manager: file major version number | |
#define | WT_STAT_DSRC_BLOCK_SIZE |
block-manager: file size in bytes | |
#define | WT_STAT_DSRC_BLOCK_MINOR |
block-manager: minor version number | |
#define | WT_STAT_DSRC_BTREE_CHECKPOINT_GENERATION |
btree: btree checkpoint generation | |
#define | WT_STAT_DSRC_BTREE_CLEAN_CHECKPOINT_TIMER |
btree: btree clean tree checkpoint expiration time | |
#define | WT_STAT_DSRC_BTREE_COMPACT_PAGES_REVIEWED |
btree: btree compact pages reviewed | |
#define | WT_STAT_DSRC_BTREE_COMPACT_PAGES_REWRITTEN |
btree: btree compact pages rewritten | |
#define | WT_STAT_DSRC_BTREE_COMPACT_PAGES_SKIPPED |
btree: btree compact pages skipped | |
#define | WT_STAT_DSRC_BTREE_COMPACT_SKIPPED |
btree: btree skipped by compaction as process would not reduce size | |
#define | WT_STAT_DSRC_BTREE_COLUMN_FIX |
btree: column-store fixed-size leaf pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_COLUMN_INTERNAL |
btree: column-store internal pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_COLUMN_RLE |
btree: column-store variable-size RLE encoded values, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_COLUMN_DELETED |
btree: column-store variable-size deleted values, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_COLUMN_VARIABLE |
btree: column-store variable-size leaf pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_FIXED_LEN |
btree: fixed-record size | |
#define | WT_STAT_DSRC_BTREE_MAXINTLPAGE |
btree: maximum internal page size | |
#define | WT_STAT_DSRC_BTREE_MAXLEAFKEY |
btree: maximum leaf page key size | |
#define | WT_STAT_DSRC_BTREE_MAXLEAFPAGE |
btree: maximum leaf page size | |
#define | WT_STAT_DSRC_BTREE_MAXLEAFVALUE |
btree: maximum leaf page value size | |
#define | WT_STAT_DSRC_BTREE_MAXIMUM_DEPTH |
btree: maximum tree depth | |
#define | WT_STAT_DSRC_BTREE_ENTRIES |
btree: number of key/value pairs, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_OVERFLOW |
btree: overflow pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_ROW_EMPTY_VALUES |
btree: row-store empty values, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_ROW_INTERNAL |
btree: row-store internal pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_BTREE_ROW_LEAF |
btree: row-store leaf pages, only reported if tree_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_BYTES_INUSE |
cache: bytes currently in the cache | |
#define | WT_STAT_DSRC_CACHE_BYTES_DIRTY_TOTAL |
cache: bytes dirty in the cache cumulative | |
#define | WT_STAT_DSRC_CACHE_BYTES_READ |
cache: bytes read into cache | |
#define | WT_STAT_DSRC_CACHE_BYTES_WRITE |
cache: bytes written from cache | |
#define | WT_STAT_DSRC_CACHE_EVICTION_CHECKPOINT |
cache: checkpoint blocked page eviction | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_CHECKPOINT_HS |
cache: checkpoint of history store file blocked non-history store page eviction | |
#define | WT_STAT_DSRC_CACHE_EVICTION_FAIL |
cache: data source pages selected for eviction unable to be evicted | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_1 |
cache: eviction gave up due to detecting an out of order on disk value behind the last update on the chain | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_2 |
cache: eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_3 |
cache: eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_OOO_CHECKPOINT_RACE_4 |
cache: eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update | |
#define | WT_STAT_DSRC_CACHE_EVICTION_BLOCKED_REMOVE_HS_RACE_WITH_CHECKPOINT |
cache: eviction gave up due to needing to remove a record from the history store but checkpoint is running | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALK_PASSES |
cache: eviction walk passes of a file | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_LT10 |
cache: eviction walk target pages histogram - 0-9 | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_LT32 |
cache: eviction walk target pages histogram - 10-31 | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_GE128 |
cache: eviction walk target pages histogram - 128 and higher | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_LT64 |
cache: eviction walk target pages histogram - 32-63 | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_LT128 |
cache: eviction walk target pages histogram - 64-128 | |
#define | WT_STAT_DSRC_CACHE_EVICTION_TARGET_PAGE_REDUCED |
cache: eviction walk target pages reduced due to history store cache pressure | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALKS_ABANDONED |
cache: eviction walks abandoned | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALKS_STOPPED |
cache: eviction walks gave up because they restarted their walk twice | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALKS_GAVE_UP_NO_TARGETS |
cache: eviction walks gave up because they saw too many pages and found no candidates | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALKS_GAVE_UP_RATIO |
cache: eviction walks gave up because they saw too many pages and found too few candidates | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALKS_ENDED |
cache: eviction walks reached end of tree | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALK_RESTART |
cache: eviction walks restarted | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALK_FROM_ROOT |
cache: eviction walks started from root of tree | |
#define | WT_STAT_DSRC_CACHE_EVICTION_WALK_SAVED_POS |
cache: eviction walks started from saved location in tree | |
#define | WT_STAT_DSRC_CACHE_EVICTION_HAZARD |
cache: hazard pointer blocked page eviction | |
#define | WT_STAT_DSRC_CACHE_HS_INSERT |
cache: history store table insert calls | |
#define | WT_STAT_DSRC_CACHE_HS_INSERT_RESTART |
cache: history store table insert calls that returned restart | |
#define | WT_STAT_DSRC_CACHE_HS_ORDER_LOSE_DURABLE_TIMESTAMP |
cache: history store table out-of-order resolved updates that lose their durable timestamp | |
#define | WT_STAT_DSRC_CACHE_HS_ORDER_REINSERT |
cache: history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp | |
#define | WT_STAT_DSRC_CACHE_HS_READ |
cache: history store table reads | |
#define | WT_STAT_DSRC_CACHE_HS_READ_MISS |
cache: history store table reads missed | |
#define | WT_STAT_DSRC_CACHE_HS_READ_SQUASH |
cache: history store table reads requiring squashed modifies | |
#define | WT_STAT_DSRC_CACHE_HS_KEY_TRUNCATE_RTS_UNSTABLE |
cache: history store table truncation by rollback to stable to remove an unstable update | |
#define | WT_STAT_DSRC_CACHE_HS_KEY_TRUNCATE_RTS |
cache: history store table truncation by rollback to stable to remove an update | |
#define | WT_STAT_DSRC_CACHE_HS_KEY_TRUNCATE |
cache: history store table truncation to remove an update | |
#define | WT_STAT_DSRC_CACHE_HS_KEY_TRUNCATE_ONPAGE_REMOVAL |
cache: history store table truncation to remove range of updates due to key being removed from the data page during reconciliation | |
#define | WT_STAT_DSRC_CACHE_HS_ORDER_REMOVE |
cache: history store table truncation to remove range of updates due to out-of-order timestamp update on data page | |
#define | WT_STAT_DSRC_CACHE_HS_WRITE_SQUASH |
cache: history store table writes requiring squashed modifies | |
#define | WT_STAT_DSRC_CACHE_INMEM_SPLITTABLE |
cache: in-memory page passed criteria to be split | |
#define | WT_STAT_DSRC_CACHE_INMEM_SPLIT |
cache: in-memory page splits | |
#define | WT_STAT_DSRC_CACHE_EVICTION_INTERNAL |
cache: internal pages evicted | |
#define | WT_STAT_DSRC_CACHE_EVICTION_SPLIT_INTERNAL |
cache: internal pages split during eviction | |
#define | WT_STAT_DSRC_CACHE_EVICTION_SPLIT_LEAF |
cache: leaf pages split during eviction | |
#define | WT_STAT_DSRC_CACHE_EVICTION_DIRTY |
cache: modified pages evicted | |
#define | WT_STAT_DSRC_CACHE_READ_OVERFLOW |
cache: overflow pages read into cache | |
#define | WT_STAT_DSRC_CACHE_EVICTION_DEEPEN |
cache: page split during eviction deepened the tree | |
#define | WT_STAT_DSRC_CACHE_WRITE_HS |
cache: page written requiring history store records | |
#define | WT_STAT_DSRC_CACHE_READ |
cache: pages read into cache | |
#define | WT_STAT_DSRC_CACHE_READ_DELETED |
cache: pages read into cache after truncate | |
#define | WT_STAT_DSRC_CACHE_READ_DELETED_PREPARED |
cache: pages read into cache after truncate in prepare state | |
#define | WT_STAT_DSRC_CACHE_PAGES_REQUESTED |
cache: pages requested from the cache | |
#define | WT_STAT_DSRC_CACHE_EVICTION_PAGES_SEEN |
cache: pages seen by eviction walk | |
#define | WT_STAT_DSRC_CACHE_WRITE |
cache: pages written from cache | |
#define | WT_STAT_DSRC_CACHE_WRITE_RESTORE |
cache: pages written requiring in-memory restoration | |
#define | WT_STAT_DSRC_CACHE_HS_INSERT_FULL_UPDATE |
cache: the number of times full update inserted to history store | |
#define | WT_STAT_DSRC_CACHE_HS_INSERT_REVERSE_MODIFY |
cache: the number of times reverse modify inserted to history store | |
#define | WT_STAT_DSRC_CACHE_BYTES_DIRTY |
cache: tracked dirty bytes in the cache | |
#define | WT_STAT_DSRC_CACHE_EVICTION_CLEAN |
cache: unmodified pages evicted | |
#define | WT_STAT_DSRC_CACHE_STATE_GEN_AVG_GAP |
cache_walk: Average difference between current eviction generation when the page was last considered, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_AVG_WRITTEN_SIZE |
cache_walk: Average on-disk page image size seen, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_AVG_VISITED_AGE |
cache_walk: Average time in cache for pages that have been visited by the eviction server, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_AVG_UNVISITED_AGE |
cache_walk: Average time in cache for pages that have not been visited by the eviction server, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_PAGES_CLEAN |
cache_walk: Clean pages currently in cache, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_GEN_CURRENT |
cache_walk: Current eviction generation, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_PAGES_DIRTY |
cache_walk: Dirty pages currently in cache, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_ROOT_ENTRIES |
cache_walk: Entries in the root page, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_PAGES_INTERNAL |
cache_walk: Internal pages currently in cache, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_PAGES_LEAF |
cache_walk: Leaf pages currently in cache, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_GEN_MAX_GAP |
cache_walk: Maximum difference between current eviction generation when the page was last considered, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_MAX_PAGESIZE |
cache_walk: Maximum page size seen, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_MIN_WRITTEN_SIZE |
cache_walk: Minimum on-disk page image size seen, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_UNVISITED_COUNT |
cache_walk: Number of pages never visited by eviction server, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_SMALLER_ALLOC_SIZE |
cache_walk: On-disk page image sizes smaller than a single allocation unit, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_MEMORY |
cache_walk: Pages created in memory and never written, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_QUEUED |
cache_walk: Pages currently queued for eviction, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_NOT_QUEUEABLE |
cache_walk: Pages that could not be queued for eviction, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_REFS_SKIPPED |
cache_walk: Refs skipped during cache traversal, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_ROOT_SIZE |
cache_walk: Size of the root page, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CACHE_STATE_PAGES |
cache_walk: Total number of pages currently in cache, only reported if cache_walk or all statistics are enabled | |
#define | WT_STAT_DSRC_CC_PAGES_EVICT |
checkpoint-cleanup: pages added for eviction | |
#define | WT_STAT_DSRC_CC_PAGES_REMOVED |
checkpoint-cleanup: pages removed | |
#define | WT_STAT_DSRC_CC_PAGES_WALK_SKIPPED |
checkpoint-cleanup: pages skipped during tree walk | |
#define | WT_STAT_DSRC_CC_PAGES_VISITED |
checkpoint-cleanup: pages visited | |
#define | WT_STAT_DSRC_COMPRESS_PRECOMP_INTL_MAX_PAGE_SIZE |
compression: compressed page maximum internal page size prior to compression | |
#define | WT_STAT_DSRC_COMPRESS_PRECOMP_LEAF_MAX_PAGE_SIZE |
compression: compressed page maximum leaf page size prior to compression | |
#define | WT_STAT_DSRC_COMPRESS_READ |
compression: compressed pages read | |
#define | WT_STAT_DSRC_COMPRESS_WRITE |
compression: compressed pages written | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_MAX |
compression: number of blocks with compress ratio greater than 64 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_16 |
compression: number of blocks with compress ratio smaller than 16 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_2 |
compression: number of blocks with compress ratio smaller than 2 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_32 |
compression: number of blocks with compress ratio smaller than 32 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_4 |
compression: number of blocks with compress ratio smaller than 4 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_64 |
compression: number of blocks with compress ratio smaller than 64 | |
#define | WT_STAT_DSRC_COMPRESS_HIST_RATIO_8 |
compression: number of blocks with compress ratio smaller than 8 | |
#define | WT_STAT_DSRC_COMPRESS_WRITE_FAIL |
compression: page written failed to compress | |
#define | WT_STAT_DSRC_COMPRESS_WRITE_TOO_SMALL |
compression: page written was too small to compress | |
#define | WT_STAT_DSRC_CURSOR_TREE_WALK_DEL_PAGE_SKIP |
cursor: Total number of deleted pages skipped during tree walk | |
#define | WT_STAT_DSRC_CURSOR_NEXT_SKIP_TOTAL |
cursor: Total number of entries skipped by cursor next calls | |
#define | WT_STAT_DSRC_CURSOR_PREV_SKIP_TOTAL |
cursor: Total number of entries skipped by cursor prev calls | |
#define | WT_STAT_DSRC_CURSOR_SKIP_HS_CUR_POSITION |
cursor: Total number of entries skipped to position the history store cursor | |
#define | WT_STAT_DSRC_CURSOR_TREE_WALK_INMEM_DEL_PAGE_SKIP |
cursor: Total number of in-memory deleted pages skipped during tree walk | |
#define | WT_STAT_DSRC_CURSOR_SEARCH_NEAR_PREFIX_FAST_PATHS |
cursor: Total number of times a search near has exited due to prefix config | |
#define | WT_STAT_DSRC_CURSOR_INSERT_BULK |
cursor: bulk loaded cursor insert calls | |
#define | WT_STAT_DSRC_CURSOR_REOPEN |
cursor: cache cursors reuse count | |
#define | WT_STAT_DSRC_CURSOR_CACHE |
cursor: close calls that result in cache | |
#define | WT_STAT_DSRC_CURSOR_CREATE |
cursor: create calls | |
#define | WT_STAT_DSRC_CURSOR_NEXT_HS_TOMBSTONE |
cursor: cursor next calls that skip due to a globally visible history store tombstone | |
#define | WT_STAT_DSRC_CURSOR_NEXT_SKIP_GE_100 |
cursor: cursor next calls that skip greater than or equal to 100 entries | |
#define | WT_STAT_DSRC_CURSOR_NEXT_SKIP_LT_100 |
cursor: cursor next calls that skip less than 100 entries | |
#define | WT_STAT_DSRC_CURSOR_PREV_HS_TOMBSTONE |
cursor: cursor prev calls that skip due to a globally visible history store tombstone | |
#define | WT_STAT_DSRC_CURSOR_PREV_SKIP_GE_100 |
cursor: cursor prev calls that skip greater than or equal to 100 entries | |
#define | WT_STAT_DSRC_CURSOR_PREV_SKIP_LT_100 |
cursor: cursor prev calls that skip less than 100 entries | |
#define | WT_STAT_DSRC_CURSOR_INSERT |
cursor: insert calls | |
#define | WT_STAT_DSRC_CURSOR_INSERT_BYTES |
cursor: insert key and value bytes | |
#define | WT_STAT_DSRC_CURSOR_MODIFY |
cursor: modify | |
#define | WT_STAT_DSRC_CURSOR_MODIFY_BYTES |
cursor: modify key and value bytes affected | |
#define | WT_STAT_DSRC_CURSOR_MODIFY_BYTES_TOUCH |
cursor: modify value bytes modified | |
#define | WT_STAT_DSRC_CURSOR_NEXT |
cursor: next calls | |
#define | WT_STAT_DSRC_CURSOR_OPEN_COUNT |
cursor: open cursor count | |
#define | WT_STAT_DSRC_CURSOR_RESTART |
cursor: operation restarted | |
#define | WT_STAT_DSRC_CURSOR_PREV |
cursor: prev calls | |
#define | WT_STAT_DSRC_CURSOR_REMOVE |
cursor: remove calls | |
#define | WT_STAT_DSRC_CURSOR_REMOVE_BYTES |
cursor: remove key bytes removed | |
#define | WT_STAT_DSRC_CURSOR_RESERVE |
cursor: reserve calls | |
#define | WT_STAT_DSRC_CURSOR_RESET |
cursor: reset calls | |
#define | WT_STAT_DSRC_CURSOR_SEARCH |
cursor: search calls | |
#define | WT_STAT_DSRC_CURSOR_SEARCH_HS |
cursor: search history store calls | |
#define | WT_STAT_DSRC_CURSOR_SEARCH_NEAR |
cursor: search near calls | |
#define | WT_STAT_DSRC_CURSOR_TRUNCATE |
cursor: truncate calls | |
#define | WT_STAT_DSRC_CURSOR_UPDATE |
cursor: update calls | |
#define | WT_STAT_DSRC_CURSOR_UPDATE_BYTES |
cursor: update key and value bytes | |
#define | WT_STAT_DSRC_CURSOR_UPDATE_BYTES_CHANGED |
cursor: update value size change | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_BYTES_TS |
reconciliation: approximate byte size of timestamps in pages written | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_BYTES_TXN |
reconciliation: approximate byte size of transaction IDs in pages written | |
#define | WT_STAT_DSRC_REC_DICTIONARY |
reconciliation: dictionary matches | |
#define | WT_STAT_DSRC_REC_PAGE_DELETE_FAST |
reconciliation: fast-path pages deleted | |
#define | WT_STAT_DSRC_REC_SUFFIX_COMPRESSION |
reconciliation: internal page key bytes discarded using suffix compression | |
#define | WT_STAT_DSRC_REC_MULTIBLOCK_INTERNAL |
reconciliation: internal page multi-block writes | |
#define | WT_STAT_DSRC_REC_PREFIX_COMPRESSION |
reconciliation: leaf page key bytes discarded using prefix compression | |
#define | WT_STAT_DSRC_REC_MULTIBLOCK_LEAF |
reconciliation: leaf page multi-block writes | |
#define | WT_STAT_DSRC_REC_OVERFLOW_KEY_LEAF |
reconciliation: leaf-page overflow keys | |
#define | WT_STAT_DSRC_REC_MULTIBLOCK_MAX |
reconciliation: maximum blocks required for a page | |
#define | WT_STAT_DSRC_REC_OVERFLOW_VALUE |
reconciliation: overflow values written | |
#define | WT_STAT_DSRC_REC_PAGES |
reconciliation: page reconciliation calls | |
#define | WT_STAT_DSRC_REC_PAGES_EVICTION |
reconciliation: page reconciliation calls for eviction | |
#define | WT_STAT_DSRC_REC_PAGE_DELETE |
reconciliation: pages deleted | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_NEWEST_START_DURABLE_TS |
reconciliation: pages written including an aggregated newest start durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_NEWEST_STOP_DURABLE_TS |
reconciliation: pages written including an aggregated newest stop durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_NEWEST_STOP_TS |
reconciliation: pages written including an aggregated newest stop timestamp | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_NEWEST_STOP_TXN |
reconciliation: pages written including an aggregated newest stop transaction ID | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_NEWEST_TXN |
reconciliation: pages written including an aggregated newest transaction ID | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_OLDEST_START_TS |
reconciliation: pages written including an aggregated oldest start timestamp | |
#define | WT_STAT_DSRC_REC_TIME_AGGR_PREPARED |
reconciliation: pages written including an aggregated prepare | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_PREPARED |
reconciliation: pages written including at least one prepare | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_DURABLE_START_TS |
reconciliation: pages written including at least one start durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_START_TS |
reconciliation: pages written including at least one start timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_START_TXN |
reconciliation: pages written including at least one start transaction ID | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_DURABLE_STOP_TS |
reconciliation: pages written including at least one stop durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_STOP_TS |
reconciliation: pages written including at least one stop timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PAGES_STOP_TXN |
reconciliation: pages written including at least one stop transaction ID | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_PREPARED |
reconciliation: records written including a prepare | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_DURABLE_START_TS |
reconciliation: records written including a start durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_START_TS |
reconciliation: records written including a start timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_START_TXN |
reconciliation: records written including a start transaction ID | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_DURABLE_STOP_TS |
reconciliation: records written including a stop durable timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_STOP_TS |
reconciliation: records written including a stop timestamp | |
#define | WT_STAT_DSRC_REC_TIME_WINDOW_STOP_TXN |
reconciliation: records written including a stop transaction ID | |
#define | WT_STAT_DSRC_SESSION_COMPACT |
session: object compaction | |
#define | WT_STAT_DSRC_TIERED_WORK_UNITS_DEQUEUED |
session: tiered operations dequeued and processed | |
#define | WT_STAT_DSRC_TIERED_WORK_UNITS_CREATED |
session: tiered operations scheduled | |
#define | WT_STAT_DSRC_TIERED_RETENTION |
session: tiered storage local retention time (secs) | |
#define | WT_STAT_DSRC_TXN_READ_RACE_PREPARE_UPDATE |
transaction: race to read prepared update retry | |
#define | WT_STAT_DSRC_TXN_RTS_HS_STOP_OLDER_THAN_NEWER_START |
transaction: rollback to stable history store records with stop timestamps older than newer records | |
#define | WT_STAT_DSRC_TXN_RTS_INCONSISTENT_CKPT |
transaction: rollback to stable inconsistent checkpoint | |
#define | WT_STAT_DSRC_TXN_RTS_KEYS_REMOVED |
transaction: rollback to stable keys removed | |
#define | WT_STAT_DSRC_TXN_RTS_KEYS_RESTORED |
transaction: rollback to stable keys restored | |
#define | WT_STAT_DSRC_TXN_RTS_HS_RESTORE_TOMBSTONES |
transaction: rollback to stable restored tombstones from history store | |
#define | WT_STAT_DSRC_TXN_RTS_HS_RESTORE_UPDATES |
transaction: rollback to stable restored updates from history store | |
#define | WT_STAT_DSRC_TXN_RTS_DELETE_RLE_SKIPPED |
transaction: rollback to stable skipping delete rle | |
#define | WT_STAT_DSRC_TXN_RTS_STABLE_RLE_SKIPPED |
transaction: rollback to stable skipping stable rle | |
#define | WT_STAT_DSRC_TXN_RTS_SWEEP_HS_KEYS |
transaction: rollback to stable sweeping history store keys | |
#define | WT_STAT_DSRC_TXN_RTS_HS_REMOVED |
transaction: rollback to stable updates removed from history store | |
#define | WT_STAT_DSRC_TXN_CHECKPOINT_OBSOLETE_APPLIED |
transaction: transaction checkpoints due to obsolete pages | |
#define | WT_STAT_DSRC_TXN_UPDATE_CONFLICT |
transaction: update conflicts | |
Statistics for join cursors | |
#define | WT_STAT_JOIN_MAIN_ACCESS |
: accesses to the main table | |
#define | WT_STAT_JOIN_BLOOM_FALSE_POSITIVE |
: bloom filter false positives | |
#define | WT_STAT_JOIN_MEMBERSHIP_CHECK |
: checks that conditions of membership are satisfied | |
#define | WT_STAT_JOIN_BLOOM_INSERT |
: items inserted into a bloom filter | |
#define | WT_STAT_JOIN_ITERATED |
: items iterated | |
Statistics for session | |
#define | WT_STAT_SESSION_BYTES_READ |
session: bytes read into cache | |
#define | WT_STAT_SESSION_BYTES_WRITE |
session: bytes written from cache | |
#define | WT_STAT_SESSION_LOCK_DHANDLE_WAIT |
session: dhandle lock wait time (usecs) | |
#define | WT_STAT_SESSION_TXN_BYTES_DIRTY |
session: dirty bytes in this txn | |
#define | WT_STAT_SESSION_READ_TIME |
session: page read from disk to cache time (usecs) | |
#define | WT_STAT_SESSION_WRITE_TIME |
session: page write from cache to disk time (usecs) | |
#define | WT_STAT_SESSION_LOCK_SCHEMA_WAIT |
session: schema lock wait time (usecs) | |
#define | WT_STAT_SESSION_CACHE_TIME |
session: time waiting for cache (usecs) | |
The functions, handles and methods applications use to access and manage data with WiredTiger.
struct WT_ITEM |
A raw item of data to be managed, including a pointer to the data and a length.
WT_ITEM structures do not need to be cleared before use.
Class Members | ||
---|---|---|
const void * | data |
The memory reference of the data item. For items returned by a WT_CURSOR, the pointer is only valid until the next operation on that cursor. Applications that need to keep an item across multiple cursor operations must make a copy. |
size_t | size |
The number of bytes in the data item. The maximum length of a single column stored in a table is not fixed (as it partially depends on the underlying file configuration), but is always a small number of bytes less than 4GB. |
struct WT_MODIFY |
A set of modifications for a value, including a pointer to new data and a length, plus a target offset in the value and an optional length of data in the value to be replaced.
WT_MODIFY structures do not need to be cleared before use.
Class Members | ||
---|---|---|
WT_ITEM | data |
New data. The size of the new data may be zero when no new data is provided. |
size_t | offset |
The zero-based byte offset in the value where the new data is placed. If the offset is past the end of the value, padding bytes are appended to the value up to the specified offset. If the value is a string (value format |
size_t | size |
The number of bytes in the value to be replaced. If the size is zero, no bytes from the value are replaced and the new data is inserted. If the offset is past the end of the value, the size is ignored. If the offset plus the size overlaps the end of the previous value, bytes from the offset to the end of the value are replaced and any remaining new data is appended. |
#define WT_CACHE_FULL |
Operation would overflow cache.
This error is only generated when wiredtiger_open is configured to run in- memory, and an insert or update operation requires more than the configured cache size to complete, or when an application thread fails to do eviction within cache_max_wait_ms. The operation may be retried; if a transaction is in progress, it should be rolled back and the operation retried in a new transaction.
#define WT_DUPLICATE_KEY |
Attempt to insert an existing key.
This error is generated when the application attempts to insert a record with the same key as an existing record without the 'overwrite' configuration to WT_SESSION::open_cursor.
#define WT_ERROR |
Non-specific WiredTiger error.
This error is returned when an error is not covered by a specific error return.
#define WT_INTPACK32_MAXSIZE |
The maximum packed size of a 32-bit integer.
The wiredtiger_struct_pack function will pack single integers into at most this many bytes.
#define WT_INTPACK64_MAXSIZE |
The maximum packed size of a 64-bit integer.
The wiredtiger_struct_pack function will pack single long integers into at most this many bytes.
#define WT_NOTFOUND |
Item not found.
This error indicates an operation did not find a value to return. This includes cursor search and other operations where no record matched the cursor's search key such as WT_CURSOR::update or WT_CURSOR::remove.
#define WT_PANIC |
WiredTiger library panic.
This error indicates an underlying problem that requires a database restart. The application may exit immediately, no further WiredTiger calls are required (and further calls will themselves immediately fail).
#define WT_PREPARE_CONFLICT |
Conflict with a prepared update.
This error is generated when the application attempts to update an already updated record which is in prepared state. An updated record will be in prepared state, when the transaction that performed the update is in prepared state.
#define WT_ROLLBACK |
Conflict between concurrent operations.
This error is generated when an operation cannot be completed due to a conflict with concurrent operations. The operation may be retried; if a transaction is in progress, it should be rolled back and the operation retried in a new transaction.
#define WT_RUN_RECOVERY |
Recovery must be run to continue.
This error is generated when wiredtiger_open is configured to return an error if recovery is required to use the database.
#define WT_TRY_SALVAGE |
Database corruption detected.
This error is generated when corruption is detected in an on-disk file. During normal operations, this may occur in rare circumstances as a result of a system crash. The application may choose to salvage the file or retry wiredtiger_open with the 'salvage=true' configuration setting.
typedef struct __wt_pack_stream WT_PACK_STREAM |
Streaming interface to packing.
This allows applications to pack or unpack records one field at a time. This is an opaque handle returned by wiredtiger_pack_start or wiredtiger_unpack_start. It must be closed with wiredtiger_pack_close.
enum WT_TS_TXN_TYPE |
WT_SESSION::timestamp_transaction_uint timestamp types.
Enumerator | |
---|---|
WT_TS_TXN_TYPE_COMMIT | Commit timestamp. |
WT_TS_TXN_TYPE_DURABLE | Durable timestamp. |
WT_TS_TXN_TYPE_PREPARE | Prepare timestamp. |
WT_TS_TXN_TYPE_READ | Read timestamp. |
int wiredtiger_calc_modify | ( | WT_SESSION * | session, |
const WT_ITEM * | oldv, | ||
const WT_ITEM * | newv, | ||
size_t | maxdiff, | ||
WT_MODIFY * | entries, | ||
int * | nentriesp | ||
) |
Calculate a set of WT_MODIFY operations to represent an update.
This call will calculate a set of modifications to an old value that produce the new value. If more modifications are required than fit in the array passed in by the caller, or if more bytes have changed than the maxdiff
parameter, the call will fail. The matching algorithm is approximate, so it may fail and return WT_NOTFOUND if a matching set of WT_MODIFY operations is not found.
The maxdiff
parameter bounds how much work will be done searching for a match: to ensure a match is found, it may need to be set larger than actual number of bytes that differ between the old and new values. In particular, repeated patterns of bytes in the values can lead to suboptimal matching, and matching ranges less than 64 bytes long will not be detected.
If the call succeeds, the WT_MODIFY operations will point into newv
, which must remain valid until WT_CURSOR::modify is called.
session | the current WiredTiger session (may be NULL) | |
oldv | old value | |
newv | new value | |
maxdiff | maximum bytes difference | |
[out] | entries | array of modifications producing the new value |
[in,out] | nentriesp | size of entries array passed in, set to the number of entries used |
int wiredtiger_config_parser_open | ( | WT_SESSION * | session, |
const char * | config, | ||
size_t | len, | ||
WT_CONFIG_PARSER ** | config_parserp | ||
) |
Create a handle that can be used to parse or create configuration strings compatible with WiredTiger APIs.
This API is outside the scope of a WiredTiger connection handle, since applications may need to generate configuration strings prior to calling wiredtiger_open.
session | the session handle to be used for error reporting (if NULL, error messages will be written to stderr). | |
config | the configuration string being parsed. The string must remain valid for the lifetime of the parser handle. | |
len | the number of valid bytes in config | |
[out] | config_parserp | A pointer to the newly opened handle |
int wiredtiger_open | ( | const char * | home, |
WT_EVENT_HANDLER * | event_handler, | ||
const char * | config, | ||
WT_CONNECTION ** | connectionp | ||
) |
Open a connection to a database.
home | The path to the database home directory. See Database Home Directory for more information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
event_handler | An event handler. If NULL , a default event handler is installed that writes error messages to stderr. See Message handling using the WT_EVENT_HANDLER for more information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
config | configuration string, see Configuration Strings. Permitted values:
WiredTiger.config or WiredTiger.basecfg appear in the WiredTiger home directory, they are read for configuration values (see WiredTiger.config file and WiredTiger.basecfg file for details). See Configuration ordering for ordering of the configuration mechanisms. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[out] | connectionp | A pointer to the newly opened connection handle |
int wiredtiger_pack_close | ( | WT_PACK_STREAM * | ps, |
size_t * | usedp | ||
) |
Close a packing stream.
ps | the packing stream handle | |
[out] | usedp | the number of bytes in the buffer used by the stream |
int wiredtiger_pack_int | ( | WT_PACK_STREAM * | ps, |
int64_t | i | ||
) |
Pack a signed integer into a packing stream.
ps | the packing stream handle |
i | a signed integer to pack |
int wiredtiger_pack_item | ( | WT_PACK_STREAM * | ps, |
WT_ITEM * | item | ||
) |
Pack an item into a packing stream.
ps | the packing stream handle |
item | an item to pack |
int wiredtiger_pack_start | ( | WT_SESSION * | session, |
const char * | format, | ||
void * | buffer, | ||
size_t | size, | ||
WT_PACK_STREAM ** | psp | ||
) |
Start a packing operation into a buffer with the given format string.
This should be followed by a series of calls to wiredtiger_pack_item, wiredtiger_pack_int, wiredtiger_pack_str or wiredtiger_pack_uint to fill in the values.
session | the session handle | |
format | the data format, see Packing and Unpacking Data | |
buffer | a pointer to memory to hold the packed data | |
size | the size of the buffer | |
[out] | psp | the new packing stream handle |
int wiredtiger_pack_str | ( | WT_PACK_STREAM * | ps, |
const char * | s | ||
) |
Pack a string into a packing stream.
ps | the packing stream handle |
s | a string to pack |
int wiredtiger_pack_uint | ( | WT_PACK_STREAM * | ps, |
uint64_t | u | ||
) |
Pack an unsigned integer into a packing stream.
ps | the packing stream handle |
u | an unsigned integer to pack |
const char* wiredtiger_strerror | ( | int | error | ) |
Return information about a WiredTiger error as a string (see WT_SESSION::strerror for a thread-safe API).
error | a return value from a WiredTiger, ISO C, or POSIX standard API |
int wiredtiger_struct_pack | ( | WT_SESSION * | session, |
void * | buffer, | ||
size_t | len, | ||
const char * | format, | ||
... | |||
) |
Pack a structure into a buffer.
See Packing and Unpacking Data for a description of the permitted format strings.
For example, the string "iSh"
will pack a 32-bit integer followed by a NUL-terminated string, followed by a 16-bit integer. The default, big-endian encoding will be used, with no alignment. This could be used in C as follows:
Then later, the values can be unpacked as follows:
session | the session handle |
buffer | a pointer to a packed byte array |
len | the number of valid bytes in the buffer |
format | the data format, see Packing and Unpacking Data |
int wiredtiger_struct_size | ( | WT_SESSION * | session, |
size_t * | lenp, | ||
const char * | format, | ||
... | |||
) |
Calculate the size required to pack a structure.
Note that for variable-sized fields including variable-sized strings and integers, the calculated sized merely reflects the expected sizes specified in the format string itself.
session | the session handle |
lenp | a location where the number of bytes needed for the matching call to wiredtiger_struct_pack is returned |
format | the data format, see Packing and Unpacking Data |
int wiredtiger_struct_unpack | ( | WT_SESSION * | session, |
const void * | buffer, | ||
size_t | len, | ||
const char * | format, | ||
... | |||
) |
Unpack a structure from a buffer.
Reverse of wiredtiger_struct_pack: gets values out of a packed byte string.
session | the session handle |
buffer | a pointer to a packed byte array |
len | the number of valid bytes in the buffer |
format | the data format, see Packing and Unpacking Data |
int wiredtiger_unpack_int | ( | WT_PACK_STREAM * | ps, |
int64_t * | ip | ||
) |
Unpack a signed integer from a packing stream.
ps | the packing stream handle | |
[out] | ip | the unpacked signed integer |
int wiredtiger_unpack_item | ( | WT_PACK_STREAM * | ps, |
WT_ITEM * | item | ||
) |
Unpack an item from a packing stream.
ps | the packing stream handle |
item | an item to unpack |
int wiredtiger_unpack_start | ( | WT_SESSION * | session, |
const char * | format, | ||
const void * | buffer, | ||
size_t | size, | ||
WT_PACK_STREAM ** | psp | ||
) |
Start an unpacking operation from a buffer with the given format string.
This should be followed by a series of calls to wiredtiger_unpack_item, wiredtiger_unpack_int, wiredtiger_unpack_str or wiredtiger_unpack_uint to retrieve the packed values.
session | the session handle | |
format | the data format, see Packing and Unpacking Data | |
buffer | a pointer to memory holding the packed data | |
size | the size of the buffer | |
[out] | psp | the new packing stream handle |
int wiredtiger_unpack_str | ( | WT_PACK_STREAM * | ps, |
const char ** | sp | ||
) |
Unpack a string from a packing stream.
ps | the packing stream handle | |
[out] | sp | the unpacked string |
int wiredtiger_unpack_uint | ( | WT_PACK_STREAM * | ps, |
uint64_t * | up | ||
) |
Unpack an unsigned integer from a packing stream.
ps | the packing stream handle | |
[out] | up | the unpacked unsigned integer |
const char* wiredtiger_version | ( | int * | majorp, |
int * | minorp, | ||
int * | patchp | ||
) |
Get version information.
majorp | a location where the major version number is returned |
minorp | a location where the minor version number is returned |
patchp | a location where the patch version number is returned |
uint32_t(*)(const void *, size_t) wiredtiger_crc32c_func(void) |
Return a pointer to a function that calculates a CRC32C checksum.
The WiredTiger library CRC32C checksum function uses hardware support where available, else it falls back to a software implementation.