From: Olaf Kirch <okir@suse.de>
Subject: Re: knfsd brought to its knees, by a simple rsync or cp operation
Date: Wed, 2 Mar 2005 10:03:13 +0100
Message-ID: <20050302090312.GA5003@suse.de>
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To: Brad Barnett <lists@L8R.net>
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On Tue, Mar 01, 2005 at 06:10:07PM -0500, Brad Barnett wrote:
> > Well, it sounds like something's eating the network bandwidth,
> > or otherwise interfering with nfsd responsiveness. Again, are
> > you using UDP or TCP? If UDP, look at nfsstat output to see if
> > you have a high retransmit count.
> > 
> 
> In my original post, I did mention that I can copy large files (isos) over
> the network at excellent speeds.  That is, I get over 6M/sec transfer
> speed...

Stil you won't answer: UDP or TCP? :-)

And the question about retransmits referred to the situation where you
see the slow-downs.

> > If it's really a problem with scheduling, it should make a difference
> > if you run the rsync job with lower priority, and/or renice the
> > nfsd threads to run with higher priority.
> 
> You can't really renice the kernel nfsd threads though :((

renice -20 -p <pid of nfsd> works for me.

Olaf
-- 
Olaf Kirch   |  --- o --- Nous sommes du soleil we love when we play
okir@suse.de |    / | \   sol.dhoop.naytheet.ah kin.ir.samse.qurax


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