Performance

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Performance

Featured

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

CONTAP-319490: Why are there qos.VioDet.Mintput.Throttle alerts after upgrading ONTAP to 9.13.1 or newer?Tue, 07 Jan 2025
High CIFS latency from set_info in other opsThu, 02 Jan 2025
Lower than expected throughput with single threaded applicationMon, 30 Dec 2024
CPU D-blade latency due to Veeam backupMon, 30 Dec 2024
CONTAP-243331: QoS limit latency observed when cluster nodes are not healthyFri, 27 Dec 2024
A FlexGroup sees outliers over 100ms into seconds causing client timeoutsThu, 19 Dec 2024
CONTAP-70759: High Latency from QoS Min on workloads with no QoS Policy or not in Adaptive QoS policyThu, 19 Dec 2024
Customer monitoring reports High CPU UtilizationFri, 13 Dec 2024
How to find workloads that do not meet their min-throughput SLOsWed, 11 Dec 2024
Lower throughput on certain HBAThu, 05 Dec 2024
Network latency for FC SAN due to noisy neighbourSun, 01 Dec 2024
Slow optimized volume move with ONTAP S3 cold tierFri, 29 Nov 2024
Latency observed on Application as well as AIQUM when CA is enabled on the shareTue, 26 Nov 2024
Slowness and timeout when opening Excel filesThu, 14 Nov 2024
Lower SnapMirror throughput due to disk bottleneckThu, 07 Nov 2024
Esx device timeout due to high latencyTue, 05 Nov 2024
High CPU utilization after a storage giveback during an ONTAP upgradeTue, 05 Nov 2024
Unable to access System Manager using the cluster-mgmt IPTue, 05 Nov 2024
Slowness in ONTAP Data Processing when repeat Zone Identifiers don't existFri, 01 Nov 2024
How to determine the number of RENAME requests for CIFS and NFS accessFri, 01 Nov 2024

What is "PEAK_PERFORMANCE" line in Active IQ Digital Advisor or the headroom in ONTAP?Tue, 21 Jan 2025
CONTAP-316617: Improper QoS rate limiting during ONTAP upgradeSat, 18 Jan 2025
CONTAP-235583: QoS minimum latency with no policies set after ONTAP upgrade.Sat, 18 Jan 2025
High CPU utilization due to wafl_exemptFri, 17 Jan 2025
High CPU utilization - Resolution GuideFri, 17 Jan 2025
CONTAP-243331: QoS limit latency observed when cluster nodes are not healthyThu, 16 Jan 2025
Fragmentation and ReallocateWed, 15 Jan 2025
CONTAP-283733: QoS latency when upgrading to 9.14.1 on volumes without a QoS policyWed, 15 Jan 2025
Slowness and timeout when opening Excel filesWed, 15 Jan 2025
Can the Optimal Transfer Length be set during LUN creation?Tue, 14 Jan 2025
No performance archives are available when attempting to invoke themMon, 13 Jan 2025
Troubleshooting CIFS Latency - Single volume readdir workloads with high latencyThu, 09 Jan 2025
How to interpret the QoS ratebucket IDWed, 08 Jan 2025
What is Adaptive QoS and how does it work?Wed, 08 Jan 2025
CONTAP-319490: Why are there qos.VioDet.Mintput.Throttle alerts after upgrading ONTAP to 9.13.1 or newer?Tue, 07 Jan 2025
CONTAP-185349: EMS reports "qos.qtree.fh.error.report" continuouslyTue, 07 Jan 2025
CONTAP-103040: Throughput reported by 'network test-link' lower than expected.Tue, 07 Jan 2025
High CREATE or OPEN latency when many clients attempt to access the same fileMon, 06 Jan 2025
Sudden latency and CPU utilization from workloads going idle to busyThu, 02 Jan 2025
High CIFS latency from set_info in other opsThu, 02 Jan 2025