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  1. MariaDB Server
  2. MDEV-24789

Performance regression after MDEV-24671

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

            Transition Time In Source Status Execution Times
            Marko Mäkelä made transition -
            Open In Progress
            		13m 7s 1
            Marko Mäkelä made transition -
            Closed Stalled
            		19d 23h 43m 1
            Marko Mäkelä made transition -
            Stalled In Progress
            		6s 1
            Marko Mäkelä made transition -
            In Progress Closed
            		5d 2h 24m 2

            People

              marko Marko Mäkelä
              marko Marko Mäkelä
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              Dates

                Created:
                Updated:
                Resolved:

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