Uploaded image for project: 'HPCC'
  1. HPCC
  2. HPCC-17717

Poor/varied performance of some jobs, seemingly related to excessive roxiemem scans

    XMLWordPrintable

    Details

    • Type: Improvement
    • Status: Scheduled
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 8.0.0
    • Component/s: Memory Manager
    • Labels:

      Description

      Some performance regression tests have very variable execution time.

      An example is 04dd_join4kl.ecl.

      On a 1 slave (slavesPerNode=1, channelsPerSlave=1) vanilla (6.4) setup, the times vary from a low ~2.5seconds to over 60seconds on my machine.

      Turning off RHFnofragment [ via #option ('heapflags', 0) ] - produces consistent timings of ~2.5seconds

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                ghalliday Gavin Halliday
                Reporter:
                jakesmith Jake Smith
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated: