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From: Thomas Schlichter <schlicht@uni-mannheim.de>
To: Dave Jones <davej@codemonkey.org.uk>, Andrew Morton <akpm@digeo.com>
Subject: Re: 2.5.60-mm2
Date: Fri, 14 Feb 2003 11:10:41 +0100
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On Friday, 14. February 2003 10:38, Dave Jones wrote:
> On Fri, Feb 14, 2003 at 01:31:44AM -0800, Andrew Morton wrote:
>  > . Considerable poking at the NFS MAP_SHARED OOM lockup.  It is limping
>  >   along now, but writeout bandwidth is poor and it is still struggling.
>  >   Needs work.
>  >
>  > . There's a one-liner which removes an O(n^2) search in the NFS
>  > writeback path.  It increases writeout bandwidth by 4x and decreases C=
PU
>  > load from 100% to 3%.  Needs work.
>
> I'm puzzled that you've had NFS stable enough to test these.
> How much testing has this stuff had? Here 2.5.60+bk clients fall over und=
er
> moderate NFS load. (And go splat quickly under high load).
>
> Trying to run things like dbench causes lockups, fsx/fstress made it
> reboot, plus the odd 'cheating' errors reported yesterday.
>
> 		Dave

I've got NFS problems with 2.5.5x - 60-bk3, too, but here I can workaround=
=20
them by simply pinging the NFS-server every second... Funny, but it works!
Perhaps this can help finding the real bug?!

  Thomas
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