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  1. WiredTiger
  2. WT-1152

fsync on flush leaves causes performance dip

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    • Type: Icon: Task Task
    • Resolution: Done
    • WT2.4.0
    • Affects Version/s: None
    • Component/s: None
    • None

      The commit that added an asynchronous fsync to checkpoint flush leaves phase caused a reduction in throughput in the wtperf update-checkpoint-btree.wtperf workload.

      The commit:
      https://github.com/wiredtiger/wiredtiger/commit/7efadad7a1cb96a368d40535e45c4ec7bb58382e

      The graph showing the performance drop:
      http://mjc.homeunix.org:8180/job/wiredtiger-perf-ckpt-btree/plot/

      keithbostic Could you take a closer look at this one? I ran on an AWS machine and see a large performance drop off with this change (though run to run variation is also high). michaelcahill ran the same test on tinderbox and saw a consistent ~10% performance drop

            Assignee:
            keith.bostic@mongodb.com Keith Bostic (Inactive)
            Reporter:
            alexander.gorrod@mongodb.com Alexander Gorrod
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              Created:
              Updated:
              Resolved: