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20.7.2 nfsstat

20.7.2.1 Server

On the server use nfsstat -ns (-n NFS information; -s server) to examine the statistics, e.g.:

% nfsstat -ns
Server nfs:
calls badcalls
69350 0
null getattr setattr root lookup readlink read
0 0% 54682 78% 266 0% 0 0% 7138 10% 748 1% 3352 4%
wrcache write create remove rename link symlink
0 0% 1465 2% 421 0% 247 0% 84 0% 5 0% 0 0%
mkdir rmdir readdir fsstat
3 0% 0 0% 902 1% 37 0%

Of these RPC calls, root and wrcache are not currently used by NFS.

If readlink is high (>10%) replace symbolic links with mount points wherever possible on the client to improve NFS performance.

If getattr is > 50% check for non-default attribute caching.


Unix System Administration - 8 AUG 1996
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