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  1. WiredTiger
  2. WT-2097

Performance regression in wtperf evict-btree job

        Details

        • Type: Bug
        • Status: Closed
        • Priority: Major - P3
        • Resolution: Fixed
        • Affects Version/s: None
        • Fix Version/s: WT2.7.0
        • Labels:
          None
        • # Replies:
          3
        • Last comment by Customer:
          true

          Description

          Jenkins is showing a performance regression in the wtperf evict btree job:
          http://build.wiredtiger.com:8080/job/wiredtiger-perf-evict-btree/

          The degradation is around 20%, and there is more variability in the run.

            Issue Links

            is depended on by

            Improvement - An improvement or enhancement to an existing feature or task. SERVER-20060 WiredTiger changes for MongoDB 3.1.8

            • Major - P3 - Major loss of function.
            • Closed

              Activity

              • Comments
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              alexander.gorrod Alexander Gorrod added a comment -

              My local testing shows that reverting the "goto stall" part of this change:
              https://github.com/wiredtiger/wiredtiger/commit/0af2b62e6fa8abb968f0847691f18e5b9c79b11f

              Improves performance. In my local testing the throughput goes from 448k ops/sec to 1700 ops/sec by not busy waiting in the loop. I'll push a branch.

              Show
              alexander.gorrod Alexander Gorrod added a comment - My local testing shows that reverting the "goto stall" part of this change: https://github.com/wiredtiger/wiredtiger/commit/0af2b62e6fa8abb968f0847691f18e5b9c79b11f Improves performance. In my local testing the throughput goes from 448k ops/sec to 1700 ops/sec by not busy waiting in the loop. I'll push a branch.
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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'agorrod', u'name': u'Alex Gorrod', u'email': u'alexg@wiredtiger.com'}

              Message: WT-2097 Reintroduce immediate waits when forced eviction is necessary.

              Reverts part of 0af2b62e6fa8abb968f0847691f18e5b9c79b11f
              Branch: develop
              https://github.com/wiredtiger/wiredtiger/commit/1e27ccaad28f678b23583ff7e804b7e6a2e5f06d

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              xgen-internal-githook Githook User added a comment - Author: {u'username': u'agorrod', u'name': u'Alex Gorrod', u'email': u'alexg@wiredtiger.com'} Message: WT-2097 Reintroduce immediate waits when forced eviction is necessary. Reverts part of 0af2b62e6fa8abb968f0847691f18e5b9c79b11f Branch: develop https://github.com/wiredtiger/wiredtiger/commit/1e27ccaad28f678b23583ff7e804b7e6a2e5f06d
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              xgen-internal-githook Githook User added a comment -

              Author:

              {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}

              Message: Merge pull request #2181 from wiredtiger/stall-for-forced-eviction

              WT-2097 Reintroduce immediate waits when forced eviction is necessary.
              Branch: develop
              https://github.com/wiredtiger/wiredtiger/commit/90082602505f8954698252b13913a7ef1f250222

              Show
              xgen-internal-githook Githook User added a comment - Author: {u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'} Message: Merge pull request #2181 from wiredtiger/stall-for-forced-eviction WT-2097 Reintroduce immediate waits when forced eviction is necessary. Branch: develop https://github.com/wiredtiger/wiredtiger/commit/90082602505f8954698252b13913a7ef1f250222

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                  Dates

                  • Created:
                    Updated:
                    Resolved:
                    Days since reply:
                    1 year, 41 weeks ago
                    Date of 1st Reply: