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High CPU utilization from TSSE

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ontap-9
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perf
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Applies to

  • ONTAP 9
  • AFF systems
  • FAS systems
  • C-Series
  • Temperature Sensitive Storage Efficiency (TSSE)

Issue

  • High CPU utilization (above expected value) without increase in IOPS or Throughput
  • This could also be reported/observed post an ONTAP upgrade
  • TSSE Scan is the listed as the top consumer for CPU from wafltop
  • TSSE is enabled on many volumes

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