Poor PE4600 NFS performance
Richard.Gaudette at Colorado.EDU
Mon Aug 5 16:58:00 CDT 2002
Right now the fstab (actually autofs mounted right now while we are
testing) entry is
simba -soft,intr,timeo=1,retrans=10 simba:/home
I have tried specifying the rsize and wsize but they seem to make
matters worse. I am surprised to see your time out parameter so long.
We found that increasing the timeo past 7 (the default I think) degraded
I should have been more specific on the "other machines" info. We allow
our users to cross mount (via autofs) a scratch partition available on
each of the machines, they use these for very large temporary files.
The NFS read performance between any of these machines (the PE4600) is
between 26-35 MB/sec. The performance for any of the other machines
reading from the PE4600 the 14 MB/sec rate. Hope that is clearer.
On Mon, 2002-08-05 at 15:18, Aly Dharshi wrote:
> what would be the contents of /etc/fstab for the clients, I have something like:
> shodan:/home /home nfs rsize=8192,wsize=8192,timeo=14,intr
> This should make things better I would think for the client to read, I got this
> out of the man pages and put it in, no problems.
> > workstations. From the PE4600 we are seeing NFS read rates of ~14
> > MB/sec. Between all of the other machines we are seeing NFS read rates
> > of 26 to 35 MB/sec.
> Maybe I am daft but I don't seem to see this, you are getting a performace of
> 26-35 MB/sec generally but NFS between machine is just about 14MB/sec ? Is that
> what you mean ?
> Aly Dharshi
> aly.dharshi at uleth.ca
> System Administrator ORS Servers
> University of Lethbridge
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