[TriLUG] NFS/Netapp Filer with Linux servers

[Errol Casey]

I've recently encountered some issues with NFS on linux servers mounting 
to a Netapp F825 server.

Linux servers running cgi based shopping cart programs seem to have really 
slow response. General cgis and web requests are running reasonably well. 
Only shopping carts seem to be affected by the NFS mounted i/o which seems 
really werid.

Monitoring the NFS traffic there is a large amount of getattr, setattr 
traffic on the Netapp filer.

I've not been able to find good documentation on what good tuned values 
are for actimeo are on Linux NFS clients are so the clients are just using
the defaults that come with the current kernel (2.4.24)

We have tried udp and tcp (we are using NFS v3).

Any suggestions? Does anybody have a copy of NFS Illustrated they would be 
willing to lend, I've tried to find a copy from the library (via 
inter-library loan but haven't had any luck, don't have the cash handy to 
go out and by a personal copy).

Thanks.