Latency in QoS before limit on ONTAP 9.1
Applies to
ONTAP 9
Issue
- QoS throttling workload well short of IOPS limit_rate.
- QoS throttling kicking in long before the stated workload limits.
- Very large data access latency is observed even without much IOPs
- QoS throttling kicking in long before the stated workload limits.
- Multiple seconds of latency for workloads that are not near their QoS cluster limit and the reason could be seen as QoS limit.
- QoS can even hang resulting in very large data access latency.