Re: 2.5.60-mm2

From: Dave Jones (
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 Jones.
| SuSE Labs
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Sat Feb 15 2003 - 22:00:52 EST