Dear community,

We have observed a significant performance degradation after migrating our NFS storage from a normal Linux NFS server to a PowerScale NFS environment (cluster with several nodes). Both systems are configured to use NFSv4.2.

Interestingly, when we switched to NFSv3 on PowerScale, the performance issues seemed to resolve themselves. This suggests a potential incompatibility or configuration issue specific to NFSv4 on PowerScale.

I want to know the exact reason, not just guess

It's worth noting that the PowerScale cluster is not under heavy load; even with minimal usage, we continue to experience performance problems. The NFS data is primarily used by a web application.

Any ideas?

Thanks