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  1. MariaDB Server
  2. MDEV-482

Fix mysql-test-run performance regression in 5.5 debug build

        Details

        • Type: Task
        • Status: Closed
        • Priority: Minor
        • Resolution: Won't Fix
        • Fix Version/s: 5.5.31
        • Component/s: None
        • Labels:
          None

          Description

          The mysql-test-run suite is much slower in 5.5 compared to 5.[123] in a
          debug build. Like on the order of 5 times slower on my machine (with --mem
          --parallel=8).

          I remember profiling it some time back, and finding most of the time being
          spent in a single InnoDB function. I believe it is some debug check done
          inside innodb that consumes huge amounts of cpu time during server start.

          I would like to discover the reason for this and fix it so that we can get the
          test suite to run significantly faster.

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                knielsen Kristian Nielsen added a comment -

                I do not think I will have time anytime soon to work on this, and it is not critical anyway.

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                knielsen Kristian Nielsen added a comment - I do not think I will have time anytime soon to work on this, and it is not critical anyway.
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                elenst Elena Stepanova added a comment -

                Maybe Jan could do it if/when he has time?

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                elenst Elena Stepanova added a comment - Maybe Jan could do it if/when he has time?

                  People

                  • Assignee:
                    knielsen Kristian Nielsen
                    Reporter:
                    knielsen Kristian Nielsen
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                      Resolved:

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