Write Performance Impacted by Back to Back Consistency Points
Applies to
- ONTAP 9
- Non-AFF controllers more susceptible to this issue
Issue
- A FlexVol or FlexGroup is experiencing increased / higher than expected write latency.
- Latency is reported as
Data
andDisk
latency from qos statistics or AIQ systat -x
output shows evidence of CP type CP_Ty B (Back-to-Back) CPs