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  1. Lustre
  2. LU-1431

Support for larger than 1MB sequential I/O RPCs

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Details

    • New Feature
    • Resolution: Fixed
    • Major
    • Lustre 2.4.0
    • Lustre 2.4.0
    • 16,900
    • 4038

    Description

      Currently Lustre maximum buffer size for a RPC sending I/O is 1MB. This work looks to change the amount of data transfer to allow the data sent to be a size to achieve peak performance with large I/O transfers to the back end disk. Also an additional benefit is the reduction in the round trip time to send the data.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-4533 rpc_stats histogram does not support max_rpcs_in_flight greater than 31

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. LU-3308 large readdir chunk size slows unlink/"rm -r" performance

          • Major - Major loss of function.
          • Reopened

          Bug - A problem which impairs or prevents the functions of the product. LU-2791 Stuck client on server OOM/lost message

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-2816 sanity-benchmark test_bonnie slow after 4MB BRW RPC patch

          • Blocker - Blocks development and/or testing work, production could not run.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-2598 obdfilter-survey LBUG ASSERTION( iobuf->dr_npages < iobuf->dr_max_pages ) failed

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-2790 Failure to allocated osd keys leads to ofd_intent_policy()) ASSERTION( res_lvb != ((void *)0) ) failed

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-3438 replay-ost-single test_5 failed with error int check_write_rcs() "Unexpected # bytes transferred"

          • Major - Major loss of function.
          • Resolved

          Technical task - A technical task. LU-2748 OSD uses kmalloc with high order to allocate a keys

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LUDOC-80 4MB RPC Doc Changes

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

          Improvement - An improvement or enhancement to an existing feature or task. LUDOC-80 4MB RPC Doc Changes

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-2424 add memory limits for ptlrpc service

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          Trackbacks

          [Confluence: Whamcloud Community Space] Lustre Community Development in Progress Features are being developed for future Lustre releases both at Whamcloud and by other organizations in the Lustre community. These will be eligible for inclusion in future Lustre releases as per our processes

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              pjones Peter Jones
              simmonsja James A Simmons
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              Dates

                Created:
                Updated:
                Resolved: