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I've got a Fedora 10 system that's exporting some file systems via NFS.

One of the exported file systems is used very heavily on a client system when I run a search engine indexer. The file activity is 100% read (no writes).

Whenever I run the indexer the systems load average skyrockets (up to 25 at points) and rpcbind is often using 98% of the CPU capacity.

On the client system I'm mounting the remote directory with the following options: intr,nosuid,ro,rsize=8192,udp,noatime,bg,nodev

On the server, I'm exporting the directory with the following options: ro,no_subtree_check

I have the NFS server configured for 32 threads.

If it makes any difference, the NFS server is also a NIS server. And the client is bound to it as a NIS client.

Any suggestions on what I can do to reduce the load on the server? Having such a high load just doesn't seem normal to me.


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What is the output of nfsstat -o all on both server and client? – Mark Wagner Mar 28 '11 at 18:56
Server: Client: – david Mar 28 '11 at 19:15

See what ports rpcbind are using lsof -p $(pidof rpcbind)

Use tcpdump to see who is talking on those ports tcpdump -s 1600 -ni eth0 port sunrpc or port 850 you might need to look at other interfaces, including lo, in case it is locally generated traffic.

strace rpcbind to see what it is doing strace -s512 -o/tmp/tr -f -p $(pidof rpcbind)

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