Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-24789

Performance regression after MDEV-24671

    XMLWordPrintable

Details

    Description

      The fix of MDEV-24671 introduced a serious performance regression that is observable at 32 concurrent connections.

      My current hypothesis based on some initial investigation is that the changed sizeof(trx->lock) caused an increase of cache misses.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25016 Race condition between lock_sys_t::cancel() and page split or merge

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25371 Potential hang in wsrep_is_BF_lock_timeout()

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26883 InnoDB hang due to table lock conflict

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24671 Assertion failure in lock_wait_table_reserve_slot()

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25016 Race condition between lock_sys_t::cancel() and page split or merge

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Activity

            People

              marko Marko Mäkelä
              marko Marko Mäkelä
              Votes:
              0 Vote for this issue
              Watchers:
              1 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Time Tracking

                  Estimated:
                  Original Estimate - Not Specified
                  Not Specified
                  Remaining:
                  Remaining Estimate - 0d
                  0d
                  Logged:
                  Time Spent - 7d 2.5h
                  7d 2.5h

                  Git Integration

                    Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.