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Intermittent Severe Read Latency on FlexCache Volumes

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ontap-9
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nas
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Applies to

  • ONTAP 9.16.1P10
  • FlexCache
  • NFS

Issue

  • NFS read operations to files that were previously pre-warmed in cache take up to ~22 minutes during impact windows, versus ~1 second when healthy
  • The cache volume is under 50% used, and the issue is intermittent and self-recovering

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