Brian,
I've got a couple of ideas. The first one, is to try to improve your send and receive packet sizes. This usually defaults to 4K, but 8K tends to have a dramatic improvement on performance, and users commonly set it using the rsize and wsize options like so when mounting from the client-side:
mount -t nfs -o rsize=8192,wsize=8192 ...
If you have a more modern version of Linux at both ends, you can try increasing the sizes even further.
Another possibility is to increase the size of the NFS memory buffers on the server to say 256KB. On RHEL 4, the default is 128KB.
You can do this by using the following commands:
echo 262144 > /proc/sys/net/core/rmem_default echo 262144 > /proc/sys/net/core/rmem_max
Thanks, James Cooley
Brian D. McGrew wrote:
Good morning,
Can someone help me with tuning up NFS or point me to a good reference? I'm running several servers, RH7.3, RH9, Solaris 8 and FC3. We're getting absolutely terrible network performance and it's not just with NFS. However, I ran up ethereal on a few of the servers and in less then three minutes I captured over a million packets, of which 95.4% were UDP NFS packets. How do I go about turning up NFS? I know this is way too much traffic for the size of our network and I'm at a complete loss as to what to do.
Thanks,
-brian
Brian D. McGrew { brian@xxxxxxxxxxxxx || brian@xxxxxxxxxxxxxxxxxxx }
---
YOU! Off my planet!
-- -- James Cooley Sr. Systems Analyst Information Technology Florida Tech 321-674-7999 jcooley@xxxxxxxxxx
-- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list