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  1. Lustre
  2. LU-13412

fix read if readahead window smaller than rpc size

Details

    • Improvement
    • Resolution: Fixed
    • Minor
    • Lustre 2.14.0
    • None
    • None
    • 9223372036854775807

    Description

      Readahead always try to align readahead with RPC size, but this
      could introduce a problem if readahead window is smaller than RPC size.

      With current codes, it will fallback a lot of 4k read because most of readahead stop, fix this to align with readahead window rather than RPC size in this case.

      Attachments

        Activity

          [LU-13412] fix read if readahead window smaller than rpc size
          pjones Peter Jones added a comment -

          Landed for 2.14

          pjones Peter Jones added a comment - Landed for 2.14
          gerrit Gerrit Updater added a comment -

          Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/38132/
          Subject: LU-13412 llite: fix read if readahead window smaller than rpc size
          Project: fs/lustre-release
          Branch: master
          Current Patch Set:
          Commit: 33d08805f27bb9a4c374754505f2ef5431b9fd31

          gerrit Gerrit Updater added a comment - Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/38132/ Subject: LU-13412 llite: fix read if readahead window smaller than rpc size Project: fs/lustre-release Branch: master Current Patch Set: Commit: 33d08805f27bb9a4c374754505f2ef5431b9fd31
          gerrit Gerrit Updater added a comment -

          Wang Shilong (wshilong@ddn.com) uploaded a new patch: https://review.whamcloud.com/38132
          Subject: LU-13412 llite: fix read if readahead window smaller than rpc size
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 4e699a5dfa724bbb865e343f408cdbb2411e8a07

          gerrit Gerrit Updater added a comment - Wang Shilong (wshilong@ddn.com) uploaded a new patch: https://review.whamcloud.com/38132 Subject: LU-13412 llite: fix read if readahead window smaller than rpc size Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 4e699a5dfa724bbb865e343f408cdbb2411e8a07

          People

            wshilong Wang Shilong (Inactive)
            wshilong Wang Shilong (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: