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  1. MariaDB Server
  2. MDEV-20612

Improve InnoDB lock_sys scalability

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      Description

      lock_sys is one of three major InnoDB scalability bottlenecks. Scalability issues are especially obvious under sysbench OLTP update index/non-index benchmarks.

      There's no clarity on how exactly it should be optimised yet.

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          blocks

          Bug - A problem which impairs or prevents the functions of the product. MDEV-21452 Use condition variables and normal mutexes instead of InnoDB os_event and mutex

          • Major - Major loss of function.
          • Closed
          relates to

          Task - A task that needs to be done. MDEV-11392 AliSQL: [perf] Issue#31 OPTIMIZE CHECK/GRANT OF INNODB TABLE LOCK

          • Major - Major loss of function.
          • Open

          Task - A task that needs to be done. MDEV-16406 Refactor the InnoDB record locks

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-21175 Remove dict_table_t::n_foreign_key_checks_running from InnoDB

          • Critical - Crashes, loss of data, severe memory leak.
          • Stalled
          links to

          Web Link WL#10314: InnoDB: Lock-sys optimization: sharded lock_sys mutex

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              People

              Assignee:
              marko Marko Mäkelä
              Reporter:
              svoj Sergey Vojtovich
              Votes:
              2 Vote for this issue
              Watchers:
              10 Start watching this issue

                Dates

                Created:
                Updated: