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  1. WiredTiger
  2. WT-4616

Jenkins long-test read-only results now wildly variable

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
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      Description

      Since the merge of the dynamic compression change in WT-4433, all of the long tests have seen improvement. The long read-only test (test 4) shows almost 4x improvement in throughput sometimes.

      However, the throughput is now wildly variable, up to 100%. It seems to have a low of about 42M operations and a high of 80M operations but run-to-run, it changes wildly between runs.

      I have attached the plot. The old code was a solid straight line (the bump on the left were a few earlier runs of a dynamic compression change). We should investigate to see what is going well/poorly when the test varies by 100%.

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            • Assignee:
              backlog-server-storage-engines Backlog - Storage Engines Team
              Reporter:
              sue.loverso Sue LoVerso
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                Updated:
                Resolved: