linux-kernel - Re: [RFC][PATCH 0/6] Add group fairness to CFS

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Message-ID: <20070611193931.GA26489@elte.hu>
Date:	Mon, 11 Jun 2007 21:39:31 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Cc:	Nick Piggin <nickpiggin@...oo.com.au>, efault@....de,
	kernel@...ivas.org, containers@...ts.osdl.org,
	ckrm-tech@...ts.sourceforge.net, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, pwil3058@...pond.net.au,
	tingy@...umass.edu, tong.n.li@...el.com, wli@...omorphy.com,
	linux-kernel@...r.kernel.org, dmitry.adamushko@...il.com,
	balbir@...ibm.com, Kirill Korotaev <dev@...ru>
Subject: Re: [RFC][PATCH 0/6] Add group fairness to CFS - v1


* Ingo Molnar <mingo@...e.hu> wrote:

> > Patch 4 fixes some bad interaction between SCHED_RT and SCHED_NORMAL 
> > tasks in current CFS.
> 
> btw., the plan here is to turn off 'bit 0' in sched_features: i.e. to 
> use the precise statistics to calculate lrq->cpu_load[], not the 
> timer-irq-sampled imprecise statistics. [...]

i mean bit 6, value 64. I flipped around its meaning in -v17-rc4, so the 
new precise stats code there is now default-enabled - making SMP 
load-balancing more accurate.

	Ingo
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