Interface WiredTigerData

Deprecated

This type is only used for the deprecated collStats operation and will be removed in the next major release.

Hierarchy

Properties

LSM block-manager btree cache cache_walk compression cursor reconciliation

Properties

LSM

LSM: {
    bloom filter false positives: number;
    bloom filter hits: number;
    bloom filter misses: number;
    bloom filter pages evicted from cache: number;
    bloom filter pages read into cache: number;
    bloom filters in the LSM tree: number;
    chunks in the LSM tree: number;
    highest merge generation in the LSM tree: number;
    queries that could have benefited from a Bloom filter that did not exist: number;
    sleep for LSM checkpoint throttle: number;
    sleep for LSM merge throttle: number;
    total size of bloom filters: number;
} & Document

Type declaration

  • bloom filter false positives: number
  • bloom filter hits: number
  • bloom filter misses: number
  • bloom filter pages evicted from cache: number
  • bloom filter pages read into cache: number
  • bloom filters in the LSM tree: number
  • chunks in the LSM tree: number
  • highest merge generation in the LSM tree: number
  • queries that could have benefited from a Bloom filter that did not exist: number
  • sleep for LSM checkpoint throttle: number
  • sleep for LSM merge throttle: number
  • total size of bloom filters: number

block-manager

block-manager: {
    allocations requiring file extension: number;
    blocks allocated: number;
    blocks freed: number;
    checkpoint size: number;
    file allocation unit size: number;
    file bytes available for reuse: number;
    file magic number: number;
    file major version number: number;
    file size in bytes: number;
    minor version number: number;
}

Type declaration

  • allocations requiring file extension: number
  • blocks allocated: number
  • blocks freed: number
  • checkpoint size: number
  • file allocation unit size: number
  • file bytes available for reuse: number
  • file magic number: number
  • file major version number: number
  • file size in bytes: number
  • minor version number: number

btree

btree: {
    btree checkpoint generation: number;
    column-store fixed-size leaf pages: number;
    column-store internal pages: number;
    column-store variable-size RLE encoded values: number;
    column-store variable-size deleted values: number;
    column-store variable-size leaf pages: number;
    fixed-record size: number;
    maximum internal page key size: number;
    maximum internal page size: number;
    maximum leaf page key size: number;
    maximum leaf page size: number;
    maximum leaf page value size: number;
    maximum tree depth: number;
    number of key/value pairs: number;
    overflow pages: number;
    pages rewritten by compaction: number;
    row-store internal pages: number;
    row-store leaf pages: number;
} & Document

Type declaration

  • btree checkpoint generation: number
  • column-store fixed-size leaf pages: number
  • column-store internal pages: number
  • column-store variable-size RLE encoded values: number
  • column-store variable-size deleted values: number
  • column-store variable-size leaf pages: number
  • fixed-record size: number
  • maximum internal page key size: number
  • maximum internal page size: number
  • maximum leaf page key size: number
  • maximum leaf page size: number
  • maximum leaf page value size: number
  • maximum tree depth: number
  • number of key/value pairs: number
  • overflow pages: number
  • pages rewritten by compaction: number
  • row-store internal pages: number
  • row-store leaf pages: number

cache

cache: {
    bytes currently in the cache: number;
    bytes read into cache: number;
    bytes written from cache: number;
    checkpoint blocked page eviction: number;
    data source pages selected for eviction unable to be evicted: number;
    hazard pointer blocked page eviction: number;
    in-memory page passed criteria to be split: number;
    in-memory page splits: number;
    internal pages evicted: number;
    internal pages split during eviction: number;
    leaf pages split during eviction: number;
    modified pages evicted: number;
    overflow pages read into cache: number;
    overflow values cached in memory: number;
    page split during eviction deepened the tree: number;
    page written requiring lookaside records: number;
    pages read into cache: number;
    pages read into cache requiring lookaside entries: number;
    pages requested from the cache: number;
    pages written from cache: number;
    pages written requiring in-memory restoration: number;
    tracked dirty bytes in the cache: number;
    unmodified pages evicted: number;
} & Document

Type declaration

  • bytes currently in the cache: number
  • bytes read into cache: number
  • bytes written from cache: number
  • checkpoint blocked page eviction: number
  • data source pages selected for eviction unable to be evicted: number
  • hazard pointer blocked page eviction: number
  • in-memory page passed criteria to be split: number
  • in-memory page splits: number
  • internal pages evicted: number
  • internal pages split during eviction: number
  • leaf pages split during eviction: number
  • modified pages evicted: number
  • overflow pages read into cache: number
  • overflow values cached in memory: number
  • page split during eviction deepened the tree: number
  • page written requiring lookaside records: number
  • pages read into cache: number
  • pages read into cache requiring lookaside entries: number
  • pages requested from the cache: number
  • pages written from cache: number
  • pages written requiring in-memory restoration: number
  • tracked dirty bytes in the cache: number
  • unmodified pages evicted: number

cache_walk

cache_walk: {
    Average difference between current eviction generation when the page was last considered: number;
    Average on-disk page image size seen: number;
    Clean pages currently in cache: number;
    Current eviction generation: number;
    Dirty pages currently in cache: number;
    Entries in the root page: number;
    Internal pages currently in cache: number;
    Leaf pages currently in cache: number;
    Maximum difference between current eviction generation when the page was last considered: number;
    Maximum page size seen: number;
    Minimum on-disk page image size seen: number;
    On-disk page image sizes smaller than a single allocation unit: number;
    Pages created in memory and never written: number;
    Pages currently queued for eviction: number;
    Pages that could not be queued for eviction: number;
    Refs skipped during cache traversal: number;
    Size of the root page: number;
    Total number of pages currently in cache: number;
} & Document

Type declaration

  • Average difference between current eviction generation when the page was last considered: number
  • Average on-disk page image size seen: number
  • Clean pages currently in cache: number
  • Current eviction generation: number
  • Dirty pages currently in cache: number
  • Entries in the root page: number
  • Internal pages currently in cache: number
  • Leaf pages currently in cache: number
  • Maximum difference between current eviction generation when the page was last considered: number
  • Maximum page size seen: number
  • Minimum on-disk page image size seen: number
  • On-disk page image sizes smaller than a single allocation unit: number
  • Pages created in memory and never written: number
  • Pages currently queued for eviction: number
  • Pages that could not be queued for eviction: number
  • Refs skipped during cache traversal: number
  • Size of the root page: number
  • Total number of pages currently in cache: number

compression

compression: {
    compressed pages read: number;
    compressed pages written: number;
    page written failed to compress: number;
    page written was too small to compress: number;
    raw compression call failed, additional data available: number;
    raw compression call failed, no additional data available: number;
    raw compression call succeeded: number;
} & Document

Type declaration

  • compressed pages read: number
  • compressed pages written: number
  • page written failed to compress: number
  • page written was too small to compress: number
  • raw compression call failed, additional data available: number
  • raw compression call failed, no additional data available: number
  • raw compression call succeeded: number

cursor

cursor: {
    bulk-loaded cursor-insert calls: number;
    create calls: number;
    cursor-insert key and value bytes inserted: number;
    cursor-remove key bytes removed: number;
    cursor-update value bytes updated: number;
    insert calls: number;
    next calls: number;
    prev calls: number;
    remove calls: number;
    reset calls: number;
    restarted searches: number;
    search calls: number;
    search near calls: number;
    truncate calls: number;
    update calls: number;
}

Type declaration

  • bulk-loaded cursor-insert calls: number
  • create calls: number
  • cursor-insert key and value bytes inserted: number
  • cursor-remove key bytes removed: number
  • cursor-update value bytes updated: number
  • insert calls: number
  • next calls: number
  • prev calls: number
  • remove calls: number
  • reset calls: number
  • restarted searches: number
  • search calls: number
  • search near calls: number
  • truncate calls: number
  • update calls: number

reconciliation

reconciliation: {
    dictionary matches: number;
    fast-path pages deleted: number;
    internal page key bytes discarded using suffix compression: number;
    internal page multi-block writes: number;
    internal-page overflow keys: number;
    leaf page key bytes discarded using prefix compression: number;
    leaf page multi-block writes: number;
    leaf-page overflow keys: number;
    maximum blocks required for a page: number;
    overflow values written: number;
    page checksum matches: number;
    page reconciliation calls: number;
    page reconciliation calls for eviction: number;
    pages deleted: number;
} & Document

Type declaration

  • dictionary matches: number
  • fast-path pages deleted: number
  • internal page key bytes discarded using suffix compression: number
  • internal page multi-block writes: number
  • internal-page overflow keys: number
  • leaf page key bytes discarded using prefix compression: number
  • leaf page multi-block writes: number
  • leaf-page overflow keys: number
  • maximum blocks required for a page: number
  • overflow values written: number
  • page checksum matches: number
  • page reconciliation calls: number
  • page reconciliation calls for eviction: number
  • pages deleted: number

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