The tweaks I've been working on are for read performance. Based on
what you sent, I don't think read performance is your problem at all
(although they might help you anyway, in the long run). So, my advice
might be no more useful than line noise, but here goes:
1. You've got a nfsd taking 48% of an athlon 2200? Wow.
If you can profile it to get a look at where it's spending the
time, that would be incredibly interesting. I've never seen
an nfsd do that.
2. You've got 5 network interfaces, and 2 of them are gigabit, but
you're only running 8 nfsds. By rule of thumb, I would add
more. This doesn't solve your mystery, however, because it's
the master that's eating all the CPU.
(Why do the gigabit interfaces see an order of magnitude less
traffic than the 100Mb/s?)
3. Are you using TCP or UDP? Any kind of flow control on the switch?
I'm interested to hear what other people have to say.
-Dan
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