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  1. MariaDB Server
  2. MDEV-27866

Switching log_sys.latch to use spin based variant

Details

    Description

      • log_sys.mutex was replaced with log_sys.latch as part of redo log revamp efforts.
      • during the experiment it was observed that log_sys.latch spin-based variant
        continue to perform better on ARM in the range of 8-15%.
        (x86 didn't show any major performance difference).

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-27774 Reduce scalability bottlenecks in mtr_t::commit()

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-32374 log_sys.lsn_lock is a performance hog

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-33515 log_sys.lsn_lock causes excessive context switching

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

          Activity

            Transition Time In Source Status Execution Times
            Marko Mäkelä made transition -
            Open In Progress
            		2h 12m 1
            Vladislav Vaintroub made transition -
            In Progress Closed
            		5d 17h 51m 1

            People

              wlad Vladislav Vaintroub
              krunalbauskar Krunal Bauskar
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              Dates

                Created:
                Updated:
                Resolved:

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