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From: Con Kolivas <kernel@kolivas.org>
To: Mark Lord <lkml@rtr.ca>
Subject: Re: Renice X for cpu schedulers
Date: Fri, 20 Apr 2007 01:10:47 +1000
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Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>,
       Nick Piggin <npiggin@suse.de>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Matt Mackall <mpm@selenic.com>,
       William Lee Irwin III <wli@holomorphy.com>,
       Peter Williams <pwil3058@bigpond.net.au>,
       Mike Galbraith <efault@gmx.de>, ck list <ck@vds.kolivas.org>,
       Bill Huey <billh@gnuppy.monkey.org>, linux-kernel@vger.kernel.org,
       Arjan van de Ven <arjan@infradead.org>,
       Thomas Gleixner <tglx@linutronix.de>
References: <20070417062621.GL2986@holomorphy.com> <200704192159.35546.kernel@kolivas.org> <46276BE5.7020001@rtr.ca>
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On Thursday 19 April 2007 23:17, Mark Lord wrote:
> Con Kolivas wrote:
> s go ahead and think up great ideas for other ways of metering out cpu
>
> > bandwidth for different purposes, but for X, given the absurd simplicity
> > of renicing, why keep fighting it? Again I reiterate that most users of
> > SD have not found the need to renice X anyway except if they stick to old
> > habits of make -j4 on uniprocessor and the like, and I expect that those
> > on CFS and Nicksched would also have similar experiences.
>
> Just plain "make" (no -j2 or -j9999) is enough to kill interactivity
> on my 2GHz P-M single-core non-HT machine with SD.
>
> But with the very first posted version of CFS by Ingo,
> I can do "make -j2" no problem and still have a nicely interactive destop.

Cool. Then there's clearly a bug with SD that manifests on your machine as it 
should not have that effect at all (and doesn't on other people's machines). 
I suggest trying the latest version which fixes some bugs.

Thanks.

-- 
-ck