Slowness with Low IOPS on Linux client due to NLM port block by VMware Distributed Firewall
Applies to
- ONTAP
- NFS
- VMWARE
Issue
- Application report slowness in file transfer jobs with low IOPs reported.
- When the application running on Linux triggers Single instance of file access it works well generating around 800-1000 IOPS to the volume
- when the second instance is triggered from same server/different server to access the same file as above, IOPS on the volume drops to 2-4 IOPS.