linux-kernel - Re: scheduler scalability - cgroups, cpusets and load-balancing

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Message-Id: <1201603816.28547.94.camel@lappy>
Date:	Tue, 29 Jan 2008 11:50:16 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Paul Jackson <pj@....com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu,
	vatsa@...ux.vnet.ibm.com, dhaval@...ux.vnet.ibm.com,
	nickpiggin@...oo.com.au, ebiederm@...ssion.com,
	akpm@...ux-foundation.org, sgrubb@...hat.com, rostedt@...dmis.org,
	ghaskins@...ell.com, dmitry.adamushko@...il.com,
	tong.n.li@...el.com, tglx@...utronix.de, menage@...gle.com,
	rientjes@...gle.com
Subject: Re: scheduler scalability - cgroups, cpusets and load-balancing


On Tue, 2008-01-29 at 04:01 -0600, Paul Jackson wrote:
> Peter wrote:
> > Also the RT load-balance needs to become aware of such these sets, I
> > think Paul J and Steven once talked about it, but can't quite remember
> > where that ended
> 
> See further the thread:
> 
>   http://lkml.org/lkml/2007/10/22/400
> 
> (I don't remember where it ended up either; probably nowhere.
>  I'm just passing on the link, before doing any reading or thinking.)

Thanks for the link. Yes I think your last suggestion of creating
rt-domains ( http://lkml.org/lkml/2007/10/23/419 ) is a good one.

Upon cpuset changes we could then look for the largest disjoint set and
hang the rt balance code from that.


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