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  1. Core Server
  2. SERVER-35504

Mongo index stat for collection

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    • Type: Question
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Done
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      Please find below for mongo index stat for collection, please verify and let me know if collection is fine/tuned.

       

      db.yyy.stats()
      {
      "ns" : "xxx.yyy",
      "size" : 426697650,
      "count" : 161519,
      "avgObjSize" : 2641,
      "storageSize" : 256544768,
      "capped" : false,
      "wiredTiger" : {
      "metadata" : {
      "formatVersion" : 1
      },
      "creationString" : "access_pattern_hint=none,allocation_size=4KB,app_metadata=(formatVersion=1),block_allocation=best,block_compressor=snappy,cache_resident=false,checksum=on,colgroups=,collator=,columns=,dictionary=0,encryption=(keyid=,name=),exclusive=false,extractor=,format=btree,huffman_key=,huffman_value=,ignore_in_memory_cache_size=false,immutable=false,internal_item_max=0,internal_key_max=0,internal_key_truncate=true,internal_page_max=4KB,key_format=q,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=32KB,leaf_value_max=64MB,log=(enabled=true),lsm=(auto_throttle=true,bloom=true,bloom_bit_count=16,bloom_config=,bloom_hash_count=8,bloom_oldest=false,chunk_count_limit=0,chunk_max=5GB,chunk_size=10MB,merge_max=15,merge_min=0),memory_page_max=10m,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=false,prefix_compression_min=4,source=,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,type=file,value_format=u",
      "type" : "file",
      "uri" : "statistics:table:collection-24-3539838882717415194",
      "LSM" : {
      "bloom filter false positives" : 0,
      "bloom filter hits" : 0,
      "bloom filter misses" : 0,
      "bloom filter pages evicted from cache" : 0,
      "bloom filter pages read into cache" : 0,
      "bloom filters in the LSM tree" : 0,
      "chunks in the LSM tree" : 0,
      "highest merge generation in the LSM tree" : 0,
      "queries that could have benefited from a Bloom filter that did not exist" : 0,
      "sleep for LSM checkpoint throttle" : 0,
      "sleep for LSM merge throttle" : 0,
      "total size of bloom filters" : 0
      },
      "block-manager" : {
      "allocations requiring file extension" : 7124,
      "blocks allocated" : 200493,
      "blocks freed" : 126482,
      "checkpoint size" : 195432448,
      "file allocation unit size" : 4096,
      "file bytes available for reuse" : 61054976,
      "file magic number" : 120897,
      "file major version number" : 1,
      "file size in bytes" : 256544768,
      "minor version number" : 0
      },
      "btree" : {
      "btree checkpoint generation" : 61504,
      "column-store fixed-size leaf pages" : 0,
      "column-store internal pages" : 0,
      "column-store variable-size RLE encoded values" : 0,
      "column-store variable-size deleted values" : 0,
      "column-store variable-size leaf pages" : 0,
      "fixed-record size" : 0,
      "maximum internal page key size" : 368,
      "maximum internal page size" : 4096,
      "maximum leaf page key size" : 2867,
      "maximum leaf page size" : 32768,
      "maximum leaf page value size" : 67108864,
      "maximum tree depth" : 4,
      "number of key/value pairs" : 0,
      "overflow pages" : 0,
      "pages rewritten by compaction" : 0,
      "row-store internal pages" : 0,
      "row-store leaf pages" : 0
      },
      "cache" : {
      "bytes currently in the cache" : 78447565,
      "bytes read into cache" : NumberLong("92974731983051"),
      "bytes written from cache" : 2039030318,
      "checkpoint blocked page eviction" : 0,
      "data source pages selected for eviction unable to be evicted" : 231467,
      "hazard pointer blocked page eviction" : 226227,
      "in-memory page passed criteria to be split" : 0,
      "in-memory page splits" : 0,
      "internal pages evicted" : 1062,
      "internal pages split during eviction" : 0,
      "leaf pages split during eviction" : 3596,
      "modified pages evicted" : 77999,
      "overflow pages read into cache" : 0,
      "overflow values cached in memory" : 0,
      "page split during eviction deepened the tree" : 0,
      "page written requiring lookaside records" : 0,
      "pages read into cache" : 4588086468,
      "pages read into cache requiring lookaside entries" : 0,
      "pages requested from the cache" : 22973864799,
      "pages written from cache" : 153597,
      "pages written requiring in-memory restoration" : 5,
      "tracked dirty bytes in the cache" : 0,
      "unmodified pages evicted" : 4588098368
      },
      "cache_walk" : {
      "Average difference between current eviction generation when the page was last considered" : 0,
      "Average on-disk page image size seen" : 0,
      "Clean pages currently in cache" : 0,
      "Current eviction generation" : 0,
      "Dirty pages currently in cache" : 0,
      "Entries in the root page" : 0,
      "Internal pages currently in cache" : 0,
      "Leaf pages currently in cache" : 0,
      "Maximum difference between current eviction generation when the page was last considered" : 0,
      "Maximum page size seen" : 0,
      "Minimum on-disk page image size seen" : 0,
      "On-disk page image sizes smaller than a single allocation unit" : 0,
      "Pages created in memory and never written" : 0,
      "Pages currently queued for eviction" : 0,
      "Pages that could not be queued for eviction" : 0,
      "Refs skipped during cache traversal" : 0,
      "Size of the root page" : 0,
      "Total number of pages currently in cache" : 0
      },
      "compression" : {
      "compressed pages read" : 4588080168,
      "compressed pages written" : 89824,
      "page written failed to compress" : 0,
      "page written was too small to compress" : 63773,
      "raw compression call failed, additional data available" : 0,
      "raw compression call failed, no additional data available" : 0,
      "raw compression call succeeded" : 0
      },
      "cursor" : {
      "bulk-loaded cursor-insert calls" : 0,
      "create calls" : 4790,
      "cursor-insert key and value bytes inserted" : 443384741,
      "cursor-remove key bytes removed" : 0,
      "cursor-update value bytes updated" : 0,
      "insert calls" : 180062,
      "next calls" : 65110076080,
      "prev calls" : 1,
      "remove calls" : 0,
      "reset calls" : 710241690,
      "restarted searches" : 3,
      "search calls" : 24702818336,
      "search near calls" : 512716148,
      "truncate calls" : 0,
      "update calls" : 0
      },
      "reconciliation" : {
      "dictionary matches" : 0,
      "fast-path pages deleted" : 0,
      "internal page key bytes discarded using suffix compression" : 86665,
      "internal page multi-block writes" : 19633,
      "internal-page overflow keys" : 0,
      "leaf page key bytes discarded using prefix compression" : 0,
      "leaf page multi-block writes" : 5619,
      "leaf-page overflow keys" : 0,
      "maximum blocks required for a page" : 2,
      "overflow values written" : 0,
      "page checksum matches" : 47388,
      "page reconciliation calls" : 145616,
      "page reconciliation calls for eviction" : 17012,
      "pages deleted" : 0
      },
      "session" : {
      "object compaction" : 0,
      "open cursor count" : 637
      },
      "transaction" : {
      "update conflicts" : 216
      }
      },
      "nindexes" : 9,
      "totalIndexSize" : 19562496,
      "indexSizes" : {
      "id" : 2363392,
      "requestId_vertical" : 2871296,
      "policyRisk.registrationNo_1" : 4165632,
      "policyRisk.engineNo_1" : 2105344,
      "policyRisk.chassisNo_1" : 2220032,
      "proposer.fName_1" : 1994752,
      "proposer.lName_1" : 1409024,
      "misOwnerId_1_recordStatus_1_recordAssignedDate_1" : 1572864,
      "recordStatus_1_misOwnerId_1" : 860160
      },
      "ok" : 1
      }

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              Assignee:
              kelsey.schubert Kelsey T Schubert
              Reporter:
              navneet.singh@spikecloud.com Navneet Singh
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                Updated:
                Resolved: