Strange NFS performance

Richard Nyberg rnyberg at it.su.se
Sun Apr 18 09:47:49 PDT 2004


At Sun, 18 Apr 2004 16:56:20 +0200,
Richard Nyberg wrote:
> 
> At Sun, 18 Apr 2004 06:15:29 -0700,
> walt wrote:
> > 
> > Richard Nyberg wrote:
> > > I have two NFS client mahcines. One running FreeBSD 4.8 and one running
> > > dragonfly. The NFS server runs the same version of dragonfly as the client
> > > (from 14 Apr.).
> > .
> > .
> > > Reading and writing 100MB
> > .
> > .
> > > DragonFly client (1700XP AMD, 512MB RAM, if_vr0)
> > > Reading ~13s
> > > Writing >1min
> > 
> > I had a similar problem with linux on a via-rhine machine where the
> > performance in one direction was very slow.  It turned out to be a bug
> > in the via-rhine driver (now fixed).  The bug very clearly showed up
> > with scp as well as nfs -- do you see the same speed asymmetry when
> > using scp?
> 
> Hmm. I should have checked that, I just assumed it was nfs ~:P
> 
> scp 100MB
> 
Actually, trying some more I just cannot draw any conclusion from the scp
test. I get som many varying results in both direction that I do not know
what to make out of it.

The nfs is issue is the same though. Sorry for the confusion.

        -Richard





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