From: "H . J . Lu" <hjl@lucon.org>
Subject: Re: Re: Proposed changes for init file in nfs-utils
Date: Sun, 7 Apr 2002 20:10:43 -0700
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Cc: Sean O'Connell <sean@ee.duke.edu>, nfs@lists.sourceforge.net
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To: Neil Brown <neilb@cse.unsw.edu.au>
In-Reply-To: <15537.823.811512.451102@notabene.cse.unsw.edu.au>; from neilb@cse.unsw.edu.au on Mon, Apr 08, 2002 at 12:40:55PM +1000
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On Mon, Apr 08, 2002 at 12:40:55PM +1000, Neil Brown wrote:
> On Sunday April 7, hjl@lucon.org wrote:
> > 
> > I checked a slightly different patch. Please check it out and make
> > sure I didn't break anything.
> 
> ...
> > +	if [ "$TUNE_QUEUE" = "yes" ]; then
> > + 	    /sbin/sysctl -w net.core.rmem_default=$NFSD_QS >/dev/null 2>&1
> > +	    /sbin/sysctl -w net.core.rmem_max=$NFSD_QS >/dev/null 2>&1
> > +	    /sbin/sysctl -w net.core.wmem_default=$NFSD_QS >/dev/null 2>&1
> > +	    /sbin/sysctl -w net.core.wmem_max=$NFSD_QS >/dev/null 2>&1
> > +	fi
> 
> Though it possibly doesn't hurt, there is nothing to be gained by
> setting the wmem_{default,max}.
> Only the rmem needs to be set.  This is because nfsd doesn't take
> packets off the udp queue until they are completely processed, so the
> rmem_{default,max} needs to be big enough to hold all currently active
> requests.
> 

I guess I don't have to tell you feel free to make any necessary
changes :-).


H.J.

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