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  1. WiredTiger
  2. WT-4920

Add statistics tracking when eviction server is waiting for page transitions

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT3.2.1, 4.3.1, 4.2.0-rc3, 4.0.13
    • Component/s: None
    • Labels:
      None
    • Sprint:
      Storage Engines 2019-07-19
    • Backport Requested:
      v4.0

      Description

      The eviction server walks the cache when populating the queue, we attempt to make it so that the walk never waits for a page. There are cases when the server needs to wait for a page to transition to a different state (in WT_REF_READING or WT_REF_LOCKED). We should add statistics so we can see if the eviction server ends up waiting for a surprisingly long time.

      This would give us a way to notice if WT-4565 is happening.

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            Assignee:
            alexander.gorrod Alexander Gorrod
            Reporter:
            alexander.gorrod Alexander Gorrod
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              Created:
              Updated:
              Resolved: