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Performance

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Performance Resolution Guide
Start here to troubleshoot ONTAP 9 performance
Data Processing latency Resolution Guide
Troubleshoot Data Processing latency
Disk utilization and latency Resolution Guide
Troubleshoot FAS high disk latency or utilization
Other Resources
  • Node takes a long time to complete the takeoverWed, 18 Sep 2024
  • Can ONTAP specify a thruput limit at the SMB share levelWed, 11 Sep 2024
  • CONTAP-306165: Commands reference incorrectly displays "Aggregate" column as a result of "statistics volume show"Fri, 06 Sep 2024
  • What does the 'cluster' displayed in the statistics system show command indicate?Fri, 06 Sep 2024
  • Increase in network traffic following update from ONTAP 9.13.1P7 to 9.13.1P8Wed, 04 Sep 2024
  • copy-offload throttle is not being enforcedTue, 03 Sep 2024
  • CONTAP-283141: ONTAP cluster node reboots unexpectedlyFri, 30 Aug 2024
  • Network outage during ONTAP upgradeFri, 30 Aug 2024
  • Increase in CPU utilization when snapmirror is in progressThu, 29 Aug 2024
  • CONTAP-293446: Counter Manager Archive files get purged after takeoverWed, 28 Aug 2024
  • High latency when FlexCache origin has stale entries after deleting cache volumesWed, 28 Aug 2024
  • Latency issues with Oracle databases on a C-Series AFF systemThu, 22 Aug 2024
  • CONTAP-283733: QoS latency when upgrading to 9.14.1 on volumes without a QoS policyThu, 22 Aug 2024
  • High latency from Disk IO even the disk utilization is still lowWed, 21 Aug 2024
  • CONTAP-185349: EMS reports "qos.qtree.fh.error.report" continuouslySat, 17 Aug 2024
  • FlexCache origin node goes unresponsive with undersized cache volumesTue, 13 Aug 2024
  • API calls to query qtrees from Grafana Harvest take long timeTue, 30 Jul 2024
  • Cifs performance on shares behind VPN is lowMon, 29 Jul 2024
  • Poor performance with CIFS and Microsoft Defender for EndpointMon, 29 Jul 2024
  • High CPU utilization from TSSEMon, 29 Jul 2024
  • Can ONTAP specify a thruput limit at the SMB share levelWed, 18 Sep 2024
  • High nblade latency with available headroomWed, 18 Sep 2024
  • Node takes a long time to complete the takeoverWed, 18 Sep 2024
  • High Read or Write Latency due to CPU bottleneck from user workloadWed, 18 Sep 2024
  • _ocs_vserver workload can cause high Node utilization/latencyWed, 18 Sep 2024
  • CONTAP-185349: EMS reports "qos.qtree.fh.error.report" continuouslyWed, 18 Sep 2024
  • Extremely high latency from CPU N-blade caused by volume offlineTue, 17 Sep 2024
  • High Data Processing latency due to a bursty workloadTue, 17 Sep 2024
  • High latency from Disk IO even the disk utilization is still lowThu, 12 Sep 2024
  • CONTAP-306165: Commands reference incorrectly displays "Aggregate" column as a result of "statistics volume show"Wed, 11 Sep 2024
  • Extremely slow "rm -rf" performanceTue, 10 Sep 2024
  • Latency increases suddenly while using QoS - Resolution GuideTue, 10 Sep 2024
  • CONTAP-197212: Panic on MGWD processSat, 07 Sep 2024
  • How many IOPs can a FAS or AFF controller handleFri, 06 Sep 2024
  • Poor performance with CIFS and Microsoft Defender for EndpointFri, 06 Sep 2024
  • Latency issues with Oracle databases on a C-Series AFF systemFri, 06 Sep 2024
  • High read latency due to high disk utilizationFri, 06 Sep 2024
  • High latency observed on volume with quotas enabledFri, 06 Sep 2024
  • CONTAP-293446: Counter Manager Archive files get purged after takeoverFri, 06 Sep 2024
  • CONTAP-283733: QoS latency when upgrading to 9.14.1 on volumes without a QoS policyFri, 06 Sep 2024
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