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  1. Lustre
  2. LU-9069

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

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Minor Minor
    • None
    • Lustre 2.10.0
    • onyx-64 thru 67
      Full Group test, RHEL7.3/ZFS
      master branch, b3499
    • 3
    • 9223372036854775807

      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

        1. sanity_2017-01-31_2138.zip
          17.87 MB

            wc-triage WC Triage
            jcasper James Casper (Inactive)
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              Created:
              Updated: