with nfs v3 a lot of bugs were introduced on nfs server.
be shure to be on bos.net.nfs.server >4.2.1.8
choose adequate number of nfs-threads (see performance guide)
nfso -a -o nfs_max_threads=$BIG_NUMBER
or smit chnfs
is a good start (where BIG_NUMBER>>8)
to see the number of active threads:
a: find the pid of the nfsd process, ppp
b: issue ps -p ppp -mo THREAD
The first couple of threads shown are control threads, the rest are
actual nfsd threads. If you look for threads with a nonzero value in the
C column, this will give you (roughly) the number of threads which ran in
the last second or so. If all your threads always show cpu, then you
need more.
> I have a performance problem using NFS mount.
> I export a file system from a machine using NFS V3 (AIX 4.2.1)
> I mount this filesystem on a machine with NFS V2 (AIX 4.1.4)
> The transfer rate is worse than NFS V2 mounted on NFS V2
> On the other hand if I mount the same exporeted filesystem on another
> NFS V3 sysstem and that i use the "nfs3" filesystem type the transfer
> rate is excellent.
> Does anybody knows the solution to speed up my NFS mount when the client
> runs NFS V2 (AIX 4.1.4) and the server runs NFS V3 (AIX 4.2.1).
> I do not want to update my AIX 4.1.4 system.
> Thanks
> Olivier
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