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  1. Lustre
  2. LU-4820

extra memcpy in read path

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.8.0
    • Lustre 2.4.1, Lustre 2.5.0, Lustre 2.6.0, Lustre 2.4.2, Lustre 2.5.1, Lustre 2.5.2, Lustre 2.4.3
    • ZFS
    • 3
    • 13259

    Description

      osd_read_prep() in osd-zfs/ calls into dmu_read() which finds the buffers filled osd_bufs_get_read(). this is not needed and cost us extra memcpy() on all the reads.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-5278 ZFS - many OST watchdogs with IOR

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

          Activity

            [LU-4820] extra memcpy in read path
            pjones Peter Jones made changes -
            Link Original: This issue is related to LDEV-18 [ LDEV-18 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to LDEV-19 [ LDEV-19 ]
            pjones Peter Jones made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: Reopened [ 4 ] New: Closed [ 6 ]
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.8.0 [ 11113 ]
            pjones Peter Jones made changes -
            Resolution Original: Fixed [ 1 ]
            Status Original: Closed [ 6 ] New: Reopened [ 4 ]
            bzzz Alex Zhuravlev made changes -
            Status Original: Resolved [ 5 ] New: Closed [ 6 ]
            bzzz Alex Zhuravlev added a comment -

            any objections to close the ticket?

            bzzz Alex Zhuravlev added a comment - any objections to close the ticket?
            bzzz Alex Zhuravlev made changes -
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            bzzz Alex Zhuravlev added a comment -

            landed to master

            bzzz Alex Zhuravlev added a comment - landed to master
            morrone Christopher Morrone (Inactive) made changes -
            Labels New: llnl

            People

              bzzz Alex Zhuravlev
              bzzz Alex Zhuravlev
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              Dates

                Created:
                Updated:
                Resolved: