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I have a Linux NFS server which has large number of clients. These clients mount a file, lock it and make low level file operations on it. As a result, server's load is low, but all locks are occupied and new clients cannot request even the smallest files.

I've increased the process count, everything is fine now, but I need a way to see the lock and thread state of the server.

Is there way to see such information for NFS?

P.S.: I've searched the site and didn't manage to find an answer. Sorry if it's a duplicate.

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The NFS server in the Linux kernel exports some statistics through the files in /proc/net/rpc. That file isn't self-documenting, however, and may be a bit cryptic.

There is a munin plugin which parses it, however; that might help.

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