Kris:
Thanks for your answer. What is the best way to measure the NFS
performance ?
Mariano.
Kris Kennaway wrote:
On Wed, Sep 14, 2005 at 10:11:47PM +0200, Mariano Benedettini wrote:
Hi people, I've also posted this message to freebsd-performance, with no
answer.
I have a mail server running FreeBSD 5.3-RELEASE. It's a dual Xeon with 4gb
of ram.
The server is running Apache (serving Horde) , Postfix, Courier imapd w/SSL,
Amavisd. Also a Postgresql as Horde's storage.
The mail storage is accessed via NFS (this server is the nfs client).
The problem is that it's experiencing a really high load average (see the
top -S and vmstat -systat ) while the CPU's are relatively idle. I think
it's a IO problem
(nfs?), but I cant figure out what exactly is causing this.
Load average doesn't indicate a performance problem, it indicates a
lot of tasks running on your machine (which after all, is what
computers are designed to do :-). Poor performance indicates a
performance problem :-)
You should measure your NFS performance to see if it is acceptable.
Upgrading to 5.4 or (better) 6.0 when it is released should provide
network and filesystem performance benefits, in general.
Kris
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