On Tue, 2007-09-25 at 14:41 +0530, Srivatsa Vaddagiri wrote:
quoted text
> On Tue, Sep 25, 2007 at 02:23:29PM +0530, Srivatsa Vaddagiri wrote:
> > On Tue, Sep 25, 2007 at 10:33:27AM +0200, Mike Galbraith wrote:
> > > > Darn, have news: latency thing isn't dead.  Two busy loops, one at nice
> > > > 0 pinned to CPU0, and one at nice 19 pinned to CPU1 produced the
> > > > latencies below for nice -5 Xorg.  Didn't kill the box though.
> 
> These busy loops - are they spawned by the same user? Is it the root
> user? Also is this seen in UP mode also?
> 
> Can you also pls check if tuning root user's cpu share helps? Basically,
> 
> 	# echo 4096 > /proc/root_user_share
> 
> [or any other higher value]

I'll try these after I beat on the box some more.

	-Mike

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