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  1. Documentation
  2. DOCS-6370

The explain of db.serverStatus on WiredtiGER

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    • Resolution: Done
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    Description

      db.serverStatus().wiredTiger shows a log of things.
      But I can not find any of this item in the document.

      I have no idea which of them is useful,or what`s the meaning of them.
      Like the return of db.serverStatus().wiredTiger.cache

      {
              "tracked dirty bytes in the cache" : 25741348,
              "tracked bytes belonging to internal pages in the cache" : 55454176753,
              "bytes currently in the cache" : 3430851169,
              "tracked bytes belonging to leaf pages in the cache" : NumberLong("9223372036854775807"),
              "maximum bytes configured" : 4294967296,
              "tracked bytes belonging to overflow pages in the cache" : 0,
              "bytes read into cache" : NumberLong("1369313451711"),
              "bytes written from cache" : 703660481848,
              "pages evicted by application threads" : 82877,
              "checkpoint blocked page eviction" : 9039,
              "unmodified pages evicted" : 50377821,
              "page split during eviction deepened the tree" : 0,
              "modified pages evicted" : 22454998,
              "pages selected for eviction unable to be evicted" : 3316349,
              "pages evicted because they exceeded the in-memory maximum" : 17,
              "pages evicted because they had chains of deleted items" : 362314,
              "failed eviction of pages that exceeded the in-memory maximum" : 34109,
              "hazard pointer blocked page eviction" : 2772938,
              "internal pages evicted" : 2167450,
              "maximum page size at eviction" : 15481714,
              "eviction server candidate queue empty when topping up" : 483082,
              "eviction server candidate queue not empty when topping up" : 853628,
              "eviction server evicting pages" : 6195617,
              "eviction server populating queue, but not evicting pages" : 1000198,
              "eviction server unable to reach eviction goal" : 11,
              "pages split during eviction" : 266859,
              "pages walked for eviction" : 31445786857,
              "eviction worker thread evicting pages" : 69577117,
              "in-memory page splits" : 8,
              "percentage overhead" : 8,
              "tracked dirty pages in the cache" : 618,
              "pages currently held in the cache" : 116937,
              "pages read into cache" : 73221060,
              "pages written from cache" : 49983684
      }                                                                          
      

      or db.serverStatus().wiredTiger.cursor or something else

      Hope for your return

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            kay.kim@mongodb.com Kay Kim (Inactive)
            378013446@qq.com liyang zhou
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            Dates

              Created:
              Updated:
              Resolved:
              6 years, 5 weeks, 2 days ago