Performance
Performance
Featured
Performance Resolution Guide
Start here to troubleshoot ONTAP 9 performance
Start here to troubleshoot ONTAP 9 performance
Data Processing latency Resolution Guide
Troubleshoot Data Processing latency
Troubleshoot Data Processing latency
Disk utilization and latency Resolution Guide
Troubleshoot FAS high disk latency or utilization
Troubleshoot FAS high disk latency or utilization
Other Resources
- REST API quota reports call is very slowTue, 13 Jan 2026
- Recurring “wafl.cp.toolong:error” Events and NFS Write Failures After ONTAP UpgradeThu, 08 Jan 2026
- wafl.readdir.expired message is seen on the FAS8040 systemWed, 07 Jan 2026
- High disk latency on remote plex and errors on ISL port channelTue, 06 Jan 2026
- How to obtain expected latency range for SSD aggregate volumesFri, 02 Jan 2026
- High CPU from tiering scanner after upgrading to 9.14.1Fri, 26 Dec 2025
- Is there any tool that can predict future performance?Sun, 21 Dec 2025
- Job delayed due to incorrect NFS mount optionSat, 20 Dec 2025
- Nblade.CifsOperationTimedOut due to LOAD_INODE_NO_WIPS suspendsFri, 19 Dec 2025
- CONTAP-271485: ONTAP cluster node reboots unexpectedlyThu, 18 Dec 2025
- High write latency due to volume nearly full during heavy write workloadThu, 18 Dec 2025
- Incorrect CPU utilization seen in SRM reportsTue, 16 Dec 2025
- High latency after adding A90 nodes on Cisco 3232CThu, 04 Dec 2025
- High CPU utilization when running vserver lock show commandMon, 01 Dec 2025
- Constantly very high CPU load from exemptMon, 01 Dec 2025
- CIFS read performance for small files is slowWed, 26 Nov 2025
- FlexCache writeback and CifsOperationTimedOut errorsMon, 24 Nov 2025
- Intermittent slow small file writes and renames on NFS clientsMon, 17 Nov 2025
- High Latency seen on Volume after vMotion activityMon, 17 Nov 2025
- Slow to open any type of Microsoft office files in WANMon, 10 Nov 2025
- REST API quota reports call is very slowTue, 13 Jan 2026
- Poor client performance but ONTAP latency is good - Resolution GuideTue, 13 Jan 2026
- Sudden latency and CPU utilization from workloadsMon, 12 Jan 2026
- Recurring “wafl.cp.toolong:error” Events and NFS Write Failures After ONTAP UpgradeThu, 08 Jan 2026
- wafl.readdir.expired message is seen on the FAS8040 systemWed, 07 Jan 2026
- High latency after adding A90 nodes on Cisco 3232CWed, 07 Jan 2026
- CONTAP-197212: Panic on MGWD processTue, 06 Jan 2026
- CONTAP-160636: QoS minimum latency with no policies set after ONTAP upgrade.Tue, 06 Jan 2026
- High disk latency on remote plex and errors on ISL port channelTue, 06 Jan 2026
- Slow SnapMirror or volume move or low throughput due to BRE/LRSE Throttling on ONTAP 9.14.1 or higherMon, 05 Jan 2026
- CONTAP-82625: MetroCluster configuration replication failure Internal Error: Failed to verify if the volume has blocks in the capacity tierSat, 03 Jan 2026
- Slower SnapMirror throughput after upgrading to ONTAP 9.14.1 or laterFri, 02 Jan 2026
- How to obtain expected latency range for SSD aggregate volumesFri, 02 Jan 2026
- Constant High Disk Utilization in the Root VolumeWed, 31 Dec 2025
- FlexCache writeback and CifsOperationTimedOut errorsWed, 31 Dec 2025
- CIFS timeout with CifsOperationTimedOut and SpinNp error 410Wed, 31 Dec 2025
- NAS access slow or hung caused by CRC errors on network portMon, 29 Dec 2025
- CONTAP-86314: “Unable to find the volume's uuid for volume" error message on MetroCluster nodesSat, 27 Dec 2025
- CONTAP-561705: DRCGFM: Cannot add volume to QoS policy group because volume is not contained in the Vserver to which the policy group belongsSat, 27 Dec 2025
- Latency observed on Application as well as AIQUM when CA is enabled on the shareFri, 26 Dec 2025
