linux-kernel - Re: [patch] CFS scheduler, -v7

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Date:	Sun, 29 Apr 2007 15:37:31 +0300
From:	"S.Çağlar Onur" <caglar@...dus.org.tr>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	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>, Mike Galbraith <efault@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Williams <pwil3058@...pond.net.au>,
	Thomas Gleixner <tglx@...utronix.de>, Willy Tarreau <w@....eu>,
	Gene Heskett <gene.heskett@...il.com>, Mark Lord <lkml@....ca>,
	Zach Carter <linux@...hcarter.com>,
	Kasper Sandberg <lkml@...anurb.dk>,
	buddabrod <buddabrod@...il.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>
Subject: Re: [patch] CFS scheduler, -v7

29 Nis 2007 Paz tarihinde, Ingo Molnar şunları yazmıştı: 
> > [...] and there were no regression instead of my daydreams) or im too
> > tired to understand the differences.
>
> could the CPU have dropped speed for that bootup (some CPUs do that
> automatically upon overheating), or perhaps if you are using some RAID
> array, could it have done a background resync? Especially the bootup
> slowdown you saw seemed significant, and because bootup speed is 90% IO
> dominated, the CPU scheduler seems an unlikely candidate.

It could some overheating problem but i think if it is, this is the first time 
it occurs :), and i don't have any array, SAMSUNG HM120JC IDE disk works on 
SONY VAIO FS-215B.

I just boot with plain CFSv7 and boot time seems normal; 

Apr 29 15:02:54 (up 10.72) /sbin/mudur.py sysinit
Apr 29 15:03:02 (up 17.26) /sbin/mudur.py boot
Apr 29 15:03:06 (up 21.34) /sbin/mudur.py default

I'll report if i can find any reproducable problem, so far CFSv7 works as 
expected :)

Cheers
-- 
S.Çağlar Onur <caglar@...dus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!

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