From: george anzinger <george@mvista.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andi Kleen <ak@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: Why HZ on i386 is 100 ?
Date: Sun, 28 Apr 2002 10:34:45 -0700 [thread overview]
Message-ID: <3CCC32B5.1DF5EA5A@mvista.com> (raw)
In-Reply-To: <E171kjK-0003oh-00@the-village.bc.nu>
Alan Cox wrote:
>
> > so, what? We will have a timer interrupt prior to the slice end, and
> > will have to make this decision all over again. However, the real rub
>
> Only on unusual occasions.
>
> > is that we have to keep track of elapsed time and account for that (i.e.
> > shorten the remaining slice) not only in the timer interrupt, but each
>
> We do anyway
Yes, but now we do all this in the timer tick, not in schedule(). This
occures much less often.
>
> Alan
--
George Anzinger george@mvista.com
High-res-timers: http://sourceforge.net/projects/high-res-timers/
Real time sched: http://sourceforge.net/projects/rtsched/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml
next prev parent reply other threads:[~2002-04-28 17:35 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3CC4861C.F21859A6@mvista.com.suse.lists.linux.kernel>
[not found] ` <E16zuPf-0007yD-00@the-village.bc.nu.suse.lists.linux.kernel>
2002-04-23 7:17 ` Why HZ on i386 is 100 ? Andi Kleen
2002-04-23 19:09 ` george anzinger
2002-04-24 1:42 ` Alan Cox
2002-04-24 20:20 ` george anzinger
2002-04-27 20:26 ` Alan Cox
2002-04-28 6:02 ` george anzinger
2002-04-28 9:12 ` Alan Cox
2002-04-28 17:34 ` george anzinger [this message]
2002-04-28 18:59 ` Alan Cox
2002-04-28 21:50 ` george anzinger
2002-04-29 0:14 ` Alan Cox
2002-04-23 19:24 ` george anzinger
2002-04-23 19:35 ` Andi Kleen
2002-04-24 17:25 ` Maciej W. Rozycki
2002-04-17 0:33 Chen, Kenneth W
2002-04-17 1:02 ` Davide Libenzi
-- strict thread matches above, loose matches on Subject: below --
2002-04-16 10:41 Cabaniols, Sebastien
2002-04-16 7:47 Olaf Fraczyk
2002-04-16 8:14 ` William Lee Irwin III
2002-04-16 8:18 ` BALBIR SINGH
2002-04-16 10:29 ` Liam Girdwood
2002-04-16 10:01 ` Olaf Fraczyk
2002-04-16 13:35 ` Terje Eggestad
2002-04-16 13:38 ` Mark Mielke
2002-04-16 13:55 ` Terje Eggestad
2002-04-16 15:32 ` Rik van Riel
2002-04-16 16:12 ` Chris Friesen
2002-04-16 17:12 ` Mark Mielke
2002-04-16 13:58 ` Alan Cox
2002-04-17 0:22 ` H. Peter Anvin
2002-04-16 16:27 ` Linus Torvalds
2002-04-16 16:50 ` David Mosberger
2002-04-16 17:18 ` Davide Libenzi
2002-04-16 17:52 ` David Mosberger
2002-04-16 18:10 ` Davide Libenzi
2002-04-17 0:49 ` David Mosberger
2002-04-17 0:57 ` Robert Love
2002-04-17 1:07 ` Davide Libenzi
2002-04-17 5:18 ` Mark Mielke
2002-04-17 5:34 ` Linus Torvalds
2002-04-17 6:01 ` Robert Love
2002-04-17 6:17 ` David Mosberger
2002-04-17 7:59 ` arjan
2002-04-17 8:04 ` Matti Aarnio
2002-04-23 22:42 ` Albert D. Cahalan
2002-04-17 10:12 ` Martin Dalecki
2002-04-18 1:51 ` Dan Mann
2002-04-17 1:22 ` Davide Libenzi
2002-04-17 3:19 ` Ben Greear
2002-04-17 7:55 ` Helge Hafting
2002-04-21 18:00 ` Pavel Machek
2002-04-22 17:20 ` John Alvord
2002-04-22 21:52 ` george anzinger
2002-04-22 23:06 ` J.D. Bakker
2002-04-22 23:26 ` Anton Blanchard
2002-04-23 19:03 ` george anzinger
2002-04-23 7:08 ` Alan Cox
2002-04-22 17:24 ` David Mosberger
2002-04-16 12:42 ` Richard B. Johnson
2002-04-16 12:31 ` Richard B. Johnson
2002-04-16 14:04 ` Bill Davidsen
2002-04-16 21:34 ` bert hubert
2002-04-16 22:21 ` Andreas Dilger
2002-04-16 22:37 ` Herbert Xu
2002-04-16 22:56 ` Andreas Dilger
2002-04-17 0:34 ` J. Dow
2002-04-17 2:40 ` Herbert Xu
2002-04-17 12:44 ` Kent Borg
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