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  1. MariaDB Server
  2. MDEV-19749

MDL scalability regression after backup locks

Details

    Description

      In 7a9dfdd GLOBAL and COMMIT namespaces were combined into BACKUP, which doubled load on BACKUP lock mutex.

      Can be fixed by implementing something similar to MySQL WL#7306 "Improve MDL performance and scalability by implementing lock-free lock acquisition for DML".

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          is caused by

          Task - A task that needs to be done. MDEV-5336 Implement BACKUP STAGE for safe external backups

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          New Feature - A new feature of the product, which has yet to be developed. MDEV-14992 BACKUP: in-server backup

          • Critical - Crashes, loss of data, severe memory leak.
          • Open

          Activity

            Transition Time In Source Status Execution Times
            Michael Widenius made transition -
            Open In Progress
            		2126d 23h 22m 1
            Marko Mäkelä made transition -
            In Testing Stalled
            		15h 10m 1
            Marko Mäkelä made transition -
            In Progress In Review
            		2h 45m 1
            Marko Mäkelä made transition -
            In Review Stalled
            		3d 3h 6m 1
            Michael Widenius made transition -
            Stalled In Progress
            		8d 1h 3m 2
            Michael Widenius made transition -
            In Progress In Testing
            		1d 2h 4m 2

            People

              monty Michael Widenius
              svoj Sergey Vojtovich
              Votes:
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              Dates

                Created:
                Updated:

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