On Thu, Oct 19, 2006 at 05:23:28PM +1000, Sarton O'Brien wrote:
> I've since had a chance to switch back to SMP and it appears my problem was 
> more than likely with the hungry memory usage of NFS. I don't know why it was 
> only prevalent under SMP but with additional RAM it is now OK (this is an 
> assumption, I did replace all Xen kernels while I had the system down so 
> maybe there was a cvs checkout that fixed it). The main thing is that it 
> doesn't seem to be a problem anymore.

If it's recent current sources it's possible that I fixed it.

> 
> I'm curious though, what are the typical or at least the highest transfer 
> speeds you would expect from one DOMU to another via NFS?

I've not especilly tested NFS, but with ttcp I get about 60MB/s between dom0
and a domU, on a SMP Xeon system. Maybe impleenting some kind of fake hardware
checkum could help a bit here ...

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 26 ans d'experience feront toujours la difference
--