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  1. WiredTiger
  2. WT-7911

Jenkins wt-perf jobs are "unstable" (due to a performance regression)

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 5.1 Required
    • Component/s: None
    • Labels:
      None
    • Story Points:
      5
    • Sprint:
      Storage - Ra 2021-10-18

      Description

      Jenkins perf jobs are unstable at the moment as there are "WARNINGS" in the log output. 

      For example, the warnings from wiredtiger-perf-btree are:

      Tracking stability of READ_COUNT 25210963
      + ../../../bench/wtperf/runners/wtperf_track.sh -c medium_read_count 25210963
      wiredtiger-perf-btree: build #9659: curval=25210963 v3=25546116 v20=25677288.500 v100=29149025.640 pct=5
      wiredtiger-perf-btree: build #9659: long term trend: WARNING: count 25677288.500 not within 5% of 29149025.640 (curval=25210963) 
       
      .......
       
      Tracking stability of READ_COUNT 25641875
      + ../../../bench/wtperf/runners/wtperf_track.sh -c medium_read_count 25641875
      wiredtiger-perf-btree: build #9659: curval=25641875 v3=25641875 v20=25661990.300 v100=29136172.460 pct=5
      wiredtiger-perf-btree: build #9659: long term trend: WARNING: count 25661990.300 not within 5% of 29136172.460 (curval=25641875)

      The warnings indicate that our performance has regressed by more than the default threshold of 5%. The scope of this ticket is understand what change on develop branch has introduced this regression. 

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              Assignee:
              backlog-server-storage-engines Backlog - Storage Engines Team
              Reporter:
              haseeb.bokhari Haseeb Bokhari
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                Dates

                Created:
                Updated: