linux-kernel - Re: [patch] CFS scheduler, -v8

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Message-Id: <200705020411.28457.gene.heskett@gmail.com>
Date:	Wed, 2 May 2007 04:11:27 -0400
From:	Gene Heskett <gene.heskett@...il.com>
To:	Mike Galbraith <efault@....de>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Con Kolivas <kernel@...ivas.org>,
	Nick Piggin <npiggin@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Williams <pwil3058@...pond.net.au>,
	Thomas Gleixner <tglx@...utronix.de>, caglar@...dus.org.tr,
	Willy Tarreau <w@....eu>, Mark Lord <lkml@....ca>,
	Zach Carter <linux@...hcarter.com>,
	buddabrod <buddabrod@...il.com>, Balbir Singh <balbir@...ibm.com>
Subject: Re: [patch] CFS scheduler, -v8

On Wednesday 02 May 2007, Mike Galbraith wrote:
>On Tue, 2007-05-01 at 23:22 +0200, Ingo Molnar wrote:
>>  - interactivity: precise load calculation and load smoothing
>
>This seems to help quite a bit.
>
>(5 second top sample)
>
> 2636 root      15  -5 19148  15m 5324 R   73  1.5   1:42.29 0
> amarok_libvisua 5440 root      20   0  320m  36m 8388 S   18  3.6   3:28.55
> 1 Xorg 4621 root      20   0 22776  18m 4168 R   12  1.8   0:00.63 1 cc1
> 4616 root      20   0 19456  13m 2200 R    9  1.3   0:00.43 0 cc1
>
>I no longer have to renice both X and Gforce to achieve a perfect
>display when they are sharing my box with a make -j2.  X is displaying
>everything it's being fed beautifully with no help.  I have to renice
>Gforce (amarok_libvisual), but given it's very heavy CPU usage, that
>seems perfectly fine.
>
>No regressions noticed so far.  Box is _very_ responsive under load,
>seemingly even more so than with previous releases.  That is purely
>subjective, but the first impression was very distinct.
>
>	-Mike

And I have a make -j4 running to apply your patch Mike, and can't tell it from 
here, no lag.

This is another keeper folks.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
It takes less time to do a thing right than it does to explain why you
did it wrong.
		-- H.W. Longfellow
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