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  1. Core Server
  2. SERVER-40382

Add a serverStatus metric to report plan cache memory consumption

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Details

    • Fully Compatible
    • v4.2, v4.0, v3.6
    • Query 2019-07-15, Query 2019-07-29, Query 2019-08-12, Query 2019-08-26

    Description

      This would help users understand when increasing memory consumption is due to growing plan cache entries. Right now, users have no insight into what portion of heap memory outside the WiredTiger cache is being used for the plan cache.

      This may be difficult to implement without SERVER-40360, which would change the architecture so that there is a single plan cache per mongod rather than a plan cache per collection.

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          is related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-34886 Plan cache size is bounded by number of entries rather than memory footprint

          • Major - P3 - Major loss of function.
          • Backlog

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-40360 Process-global plan cache

          • Major - P3 - Major loss of function.
          • Backlog

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-40361 Reduce memory footprint of plan cache entries

          • Major - P3 - Major loss of function.
          • Closed

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              arun.banala@mongodb.com Arun Banala
              david.storch@mongodb.com David Storch
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                Updated:
                Resolved: