linux-kernel - Re: BFS vs. mainline scheduler benchmarks and measurements

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Message-ID: <20090910095457.GD18599@kernel.dk>
Date:	Thu, 10 Sep 2009 11:54:57 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Nikos Chantziaras <realnc@...or.de>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Con Kolivas <kernel@...ivas.org>, linux-kernel@...r.kernel.org
Subject: Re: BFS vs. mainline scheduler benchmarks and measurements

On Thu, Sep 10 2009, Ingo Molnar wrote:
> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > > However, the interactivity problems still remain.  Does that 
> > > mean it's not a latency issue?
> > 
> > It means that Jens's test-app, which demonstrated and helped us 
> > fix the issue for him does not help us fix it for you just yet.
> 
> Lemme qualify that by saying that Jens's issues are improved not 
> fixed [he has not re-run with latest latt.c yet] but not all things 
> are fully fixed yet. For example the xmodmap thing sounds 
> interesting - could that be a child-runs-first effect?

I thought so too, so when -tip failed to boot I pulled the patches from
Mike into 2.6.31. It doesn't change anything for xmodmap, though.

-- 
Jens Axboe

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