How can I monitor NFS RPC slot usage in real-time?

Solution Unverified - Updated -

Issue

  • How do we monitor the rpc slot usage? Do one of the /proc/net/rpc/nfs* files show this? Does one of the stat (e.g. nfsstat) have a way of showing that? Would this require systemtap?
  • Is there a way to monitor the backlog of NFS rpc commands?
  • Is there any way to change the slot table entries for RPC commands?

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • NFS client

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