On Mon, Mar 05, 2007 at 08:25:53PM +1100, Sarton O'Brien wrote:
> > -----Original Message-----
> > From: port-xen-owner@NetBSD.org 
> > [mailto:port-xen-owner@NetBSD.org] On Behalf Of Anzi
> > Sent: Monday, 5 March 2007 7:06 PM
> > To: port-xen@NetBSD.org
> > Subject: xenbsd /netbsd: xennetback: can't get new mcl pages (0)
> > 
> > Mar  4 00:34:01 xenbsd /netbsd: nfs server 
> > nfsHOST:/LinuxBackup: not responding Mar  4 00:34:01 xenbsd 
> > /netbsd: nfs server nfsHOST:/LinuxBackup: is alive again Mar  
> > 4 00:36:16 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: 
> > not responding Mar  4 00:36:16 xenbsd /netbsd: nfs server 
> > nfsHOST:/LinuxBackup: is alive again Mar  4 00:39:39 xenbsd 
> > /netbsd: nfs server nfsHOST:/LinuxBackup: not responding Mar  
> > 4 00:39:39 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: 
> > is alive again
> 
> I've just started seeing this with one of my domu nfs clients. When there
> are a lot of connections all I/O slows to a crawl, almost unusable.
> 
> I've yet to really determine what the cause is. I'm not seeing the mcl
> errors you are. I've tried a lot of things nfs related to fix it but no
> luck. One easy way to replicate the problem is to fire up mldonkey and point
> the temp/download locations at nfs. This normally causes the failure within
> about 10 mins.
> 
> Unmounting then remounting seems to fix it for another 10 mins.
> 
> Loading up nfs doesn't seem to cause it either, large files transfer fine.
> 
> All other nfs clients with minimal connections continue to function fine.
> This used to be the case with mldonkey also, so I'm not sure what changed.
> 
> Any ideas? I'm not great with nfs anyway so I may be overlooking something
> simple that is nfs related. If someone has the questions, I'll probably have
> the answers :) ... Any help appreciated, there's a lot of people missing out
> while this domu is down ;)

What xen version are you running ?

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