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  1. Couchbase Server
  2. MB-36827

16% throughput regression in test "KV : Pillowfight, 80/20 R/W, 256B binary items"

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Details

    • Bug
    • Resolution: Done
    • Critical
    • None
    • 6.5.0
    • couchbase-bucket
    • Triaged
    • Unknown
    • KV-Engine Mad-Hatter GA

    Description

      There is a 16% throughput regression in test "KV : Pillowfight, 80/20 R/W, 256B binary items" between builds 4772 and 4788:

      Build Max Throughput (ops/s) URL
      6.5.0-4788 3,111,731 http://perf.jenkins.couchbase.com/job/triton/28515/
      6.5.0-4777 2,637,567 http://perf.jenkins.couchbase.com/job/triton/28432
      6.5.0-4772 3,617,303 http://perf.jenkins.couchbase.com/job/triton/28435/
      6.5.0-4766 3,648,594 http://perf.jenkins.couchbase.com/job/triton/28413

      (This is reduced from an initial regression of 38% between 4772 and 4777; build 4788 lowers the priority of the Writer threads which reduces the impact on the front-end threads).

      Side-by-side graphs: http://cbmonitor.sc.couchbase.com/reports/html/?snapshot=triton_650-4772_access_bfcb&snapshot=triton_650-4788_access_9395

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        Issue Links

          is triggered by

          Technical task - A technical task. MB-36723 Increase the default number of vBuckets which can run flushed concurrently

          • Major - Major loss of function.
          • Resolved
          relates to

          Task - A task that needs to be done. MB-36934 Investigate optimising HashTable::findInner when prepared StoredValues not present

          • Major - Major loss of function.
          • Open
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              drigby Dave Rigby (Inactive)
              drigby Dave Rigby (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

                PagerDuty