High latency on SolidFire storage volume due to Max IOPs QoS set too low
Applies to
- NetApp Element software
- NetApp SolidFire
- NetApp HCI
Issue
- High latencies reported against a SolidFire storage volume can be observed in different ways
- If you are using VMware, the message "performance has deteriorated" will be observed in
Monitor
>Events
:

- In SolidFire Active IQ (AIQ) under
Volumes
>Active Volumes
>Actions
>View
Details
>Latency
you will observe higher than expected latency values:
- In the Element UI under
Reporting
>Volume Performance
you will observe higher than expected latency values:
- You will also notice during high latency that the throughput is hitting its highest peak based on the Max QoS set. Below example shows QoS Max of 15,000 IOPS with a max throughput of 100 MB/sec, but when you look on the overall cluster performance is relatively very low:
- Cluster overall performance shows barely hitting 5%