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  1. MariaDB Server
  2. MDEV-34821

srv_sys and purge_graph_build() could hurt performance

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      In MDEV-16264, the InnoDB subsystem that purges committed transaction history was converted to use a common thread pool. However, some remains of the purge specific thread queue srv_sys was not removed, and neither was purge_sys.query. The data structures are unnecessarily complex and could hurt some performance while also making the logic harder to follow. This last came up during the code review of MDEV-34515.

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          relates to

          Task - A task that needs to be done. MDEV-16264 Implement a common work queue for InnoDB background tasks

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34515 Contention between secondary index UPDATE and purge due to large innodb_purge_batch_size

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

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              debarun Debarun Banerjee
              marko Marko Mäkelä
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