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  1. WiredTiger
  2. WT-2131

Algorithm used to wait to split into parent can be unfair

    • Type: Icon: Improvement Improvement
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • WT2.7.0
    • Affects Version/s: None
    • Component/s: None
    • None

      There are cases when threads can wait for a long time for a chance to split into their parent. This is possible in a workload that:

      • Has a lot of cache pressure (i.e: relatively small cache and a large number of threads).
      • Generates in-memory internal pages with lots of entries.

      I have seen cases where a thread has waited for over 3 seconds in __split_parent before getting in to do an update.

            Assignee:
            alexander.gorrod@mongodb.com Alexander Gorrod
            Reporter:
            alexander.gorrod@mongodb.com Alexander Gorrod
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              Created:
              Updated:
              Resolved: