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  1. Lustre
  2. LU-12924

scale precreate_batch for larger OSTs

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Labels:
    • Rank (Obsolete):
      9223372036854775807

      Description

      Using large capacity OST targets, we frequently increase obdfilter.*.precreate_batch since this appears to improve mdtest benchmark results.

      Currently the obdfilter.*.precreate_batch values scale somewhat for small capacity OST targets; from 8 (<=1GB OST) to 128 (larger OSTs). However max value of 128 has not changed in several years. mdest benchmarks suggest larger capacity OST targets (e.g. 512T) would benefit from a precreate_batch value of 256 or larger.

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            • Assignee:
              wc-triage WC Triage
              Reporter:
              adilger Andreas Dilger
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              • Created:
                Updated: