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  1. MariaDB Server
  2. MDEV-29432

innodb huge pages reclaim

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    Description

      MDEV-25341 added some memory reclaim however large page places the kernel in a difficult predicament unless the entire page is freed. While madvise(MADV_FREE) succeeds and VirtualAlloc(MEM_RESET) doesn't explicitly prohibit large pages.

      This task serves to act as a defrag.

      In MDEV-25342 the chunk (as a collection of pages) sizes are a multiple of a large page size. If pages are re-organised to allow for a chunk to be freed that provides a defrag mechanism.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34863 RAM Usage Changed Significantly Between 10.11 Releases

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-24670 avoid OOM by linux kernel co-operative memory management

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

          Task - A task that needs to be done. MDEV-25341 innodb buffer pool soft decommit of memory

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-29445 reorganise innodb buffer pool (and remove buffer pool chunks)

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

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              danblack Daniel Black
              danblack Daniel Black
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