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  1. Lustre
  2. LU-9069

ZFS sanity: FAIL: test_255a Speedup with willread is less than XX%, got YY%

    Details

    • Type: Bug
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: Lustre 2.10.0
    • Fix Version/s: None
    • Labels:
    • Environment:
      onyx-64 thru 67
      Full Group test, RHEL7.3/ZFS
      master branch, b3499
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      sanity: FAIL: test_255a Speedup with willread is less than XX%, got YY%

      Test is expecting willreads to be faster than cache reads, but willreads are slower:

      From test_log:

      Iter 1/10: cache speedup: 228%
      Iter 1/10: ladvise speedup: 24%
      
      Iter 2/10: cache speedup: 147%
      Iter 2/10: ladvise speedup: 20%
      
      Iter 3/10: cache speedup: 170%
      Iter 3/10: ladvise speedup: 10%
      

      Related to LU-8565, but that issue was attributed to VM slowness. This issue is also seen on physical machines.

      Info required for matching: sanity 255a

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              • Assignee:
                wc-triage WC Triage
                Reporter:
                casperjx James Casper (Inactive)
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                Dates

                • Created:
                  Updated: