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  1. Core Server
  2. SERVER-41492

Disable WiredTiger cursor caching and introduce more aggressive file handle sweeps in testing

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.2.1, 4.3.1
    • Component/s: None
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Backport Requested:
      v4.2
    • Sprint:
      Execution Team 2019-08-12, Execution Team 2019-08-26

      Description

      The objective is to disable WiredTiger cursor caching by setting this parameter above 0 in some builds.

      The default is -100, which enables caching in WiredTiger because it is less than or equal to 0, and also uses MongoDB cursor caching with a size of 100.

      Copied fromĀ SERVER-41494:

      Lower the following WiredTiger file_manager parameters to wiredtiger_open:

      • close_handle_minimum: number of handles open before the file manager will look for handles to close. The WT default is 250. Lower to a more reasonable number like 4.
      • close_idle_time: amount of time in seconds a file handle needs to be idle before attempting to close it. The default is 28 hours. Lower to 10 seconds.
      • close_scan_interval interval in seconds at which to check for files that are inactive and close them. The WT default is 10. Lower to 5 seconds.

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              Assignee:
              louis.williams Louis Williams
              Reporter:
              louis.williams Louis Williams
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                Updated:
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