From: Al Boldi <a1426z@gawab.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] CFS: Fix missing digit off in wmult table
Date: Mon, 16 Jul 2007 17:44:48 +0300 [thread overview]
Message-ID: <200707161744.48298.a1426z@gawab.com> (raw)
Roman Zippel wrote:
> On Mon, 16 Jul 2007, Ingo Molnar wrote:
> > to sum it up: a nice +19 task (the most commonly used nice level in
> > practice) gets 9.1%, 3.9%, 3.1% of CPU time on the old scheduler,
> > depending on the value of HZ. This is quite inconsistent and illogical.
>
> You're correct that you can find artifacts in the extreme cases, it's
> subjective whether this is a serious problem.
> It's nice that these artifacts are gone, but that still doesn't explain
> why this ratio had to be increase that much from around 1:10 to 1:69.
The ratio is definitely to high, but in addition to having a sane ratio by
default, it's probably wise to allow this to be user-configureable.
Thanks!
--
Al
next reply other threads:[~2007-07-16 14:44 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-16 14:44 Al Boldi [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-07-10 8:31 -mm merge plans for 2.6.23 Andrew Morton
2007-07-11 12:43 ` x86 status was " Andi Kleen
2007-07-11 17:42 ` Ingo Molnar
2007-07-11 21:16 ` Andi Kleen
2007-07-11 21:46 ` Andrea Arcangeli
2007-07-11 22:09 ` Linus Torvalds
2007-07-13 2:23 ` Roman Zippel
2007-07-13 4:47 ` Mike Galbraith
2007-07-13 17:23 ` Roman Zippel
2007-07-13 19:43 ` [PATCH] CFS: Fix missing digit off in wmult table Thomas Gleixner
2007-07-16 6:18 ` James Bruce
2007-07-16 7:06 ` Ingo Molnar
2007-07-16 7:41 ` Ingo Molnar
2007-07-16 15:02 ` James Bruce
2007-07-16 10:18 ` Roman Zippel
2007-07-16 11:20 ` Ingo Molnar
2007-07-16 11:58 ` Roman Zippel
2007-07-16 12:12 ` Ingo Molnar
2007-07-16 12:42 ` Roman Zippel
2007-07-16 13:40 ` Ingo Molnar
2007-07-16 14:01 ` Roman Zippel
2007-07-16 20:31 ` Matt Mackall
2007-07-16 21:18 ` Ingo Molnar
2007-07-16 22:13 ` Roman Zippel
2007-07-16 22:29 ` Ingo Molnar
2007-07-17 0:02 ` Roman Zippel
2007-07-17 3:20 ` Roman Zippel
2007-07-17 8:02 ` Ingo Molnar
2007-07-17 14:06 ` Roman Zippel
2007-07-18 10:40 ` Ingo Molnar
2007-07-18 12:40 ` Roman Zippel
2007-07-18 16:17 ` Ingo Molnar
2007-07-20 13:38 ` Roman Zippel
2007-07-16 21:25 ` Roman Zippel
2007-07-17 7:53 ` Ingo Molnar
2007-07-17 15:12 ` Roman Zippel
2007-07-16 17:47 ` Linus Torvalds
2007-07-16 18:12 ` Roman Zippel
2007-07-18 10:27 ` Peter Zijlstra
2007-07-18 12:45 ` Roman Zippel
2007-07-18 12:52 ` Peter Zijlstra
2007-07-18 12:59 ` Ingo Molnar
2007-07-18 13:07 ` Roman Zippel
2007-07-18 13:27 ` Peter Zijlstra
2007-07-18 13:58 ` Roman Zippel
2007-07-18 13:48 ` Ingo Molnar
2007-07-18 14:14 ` Roman Zippel
2007-07-18 16:02 ` Ingo Molnar
2007-07-20 15:03 ` Roman Zippel
2007-07-18 13:26 ` Roman Zippel
2007-07-18 13:31 ` Peter Zijlstra
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