From: Thomas Schlichter <schlicht@uni-mannheim.de>
To: Dave Jones <davej@codemonkey.org.uk>, Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.5.60-mm2
Date: Fri, 14 Feb 2003 11:10:41 +0100 [thread overview]
Message-ID: <200302141110.49348.schlicht@uni-mannheim.de> (raw)
In-Reply-To: <20030214093856.GC13845@codemonkey.org.uk>
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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 CPU
> > 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 under
> 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
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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next prev parent reply other threads:[~2003-02-14 10:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-14 9:31 2.5.60-mm2 Andrew Morton
2003-02-14 9:38 ` 2.5.60-mm2 Dave Jones
2003-02-14 9:58 ` 2.5.60-mm2 Andrew Morton
2003-02-14 10:13 ` 2.5.60-mm2 Dave Jones
2003-02-14 10:22 ` 2.5.60-mm2 Andrew Morton
2003-02-14 10:10 ` Thomas Schlichter [this message]
2003-02-17 1:59 ` 2.5.60-mm2 Bill Davidsen
2003-02-17 12:08 ` 2.5.60-mm2 Bill Davidsen
2003-02-17 12:35 ` 2.5.60-mm2 Thomas Schlichter
2003-02-17 18:32 ` 2.5.60-mm2 Bill Davidsen
2003-02-14 20:59 ` compile fail: 2.5.60-mm2 Core
2003-02-14 22:06 ` Andrew Morton
2003-02-15 20:27 ` 2.5.60-mm2 Arador
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