Re: 2.5.60-mm2

From: Dave Jones (davej@codemonkey.org.uk)
Date: Fri Feb 14 2003 - 04:38:56 EST


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

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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