From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: george@mvista.com (george anzinger)
Cc: ak@suse.de (Andi Kleen), alan@lxorguk.ukuu.org.uk (Alan Cox),
linux-kernel@vger.kernel.org
Subject: Re: Why HZ on i386 is 100 ?
Date: Wed, 24 Apr 2002 02:42:06 +0100 (BST) [thread overview]
Message-ID: <E170BnK-0001VB-00@the-village.bc.nu> (raw)
In-Reply-To: <3CC5B17B.4E9ACA7C@mvista.com> from "george anzinger" at Apr 23, 2002 12:09:47 PM
> I must not be making my self clear :) The overhead has nothing to do
> with hardware. It is all timer list insertion and deletion. The
> problem is that we need to do this at context switch rates, which are
> MUCH higher that tick rates and, even with the O(1) insertion code,
> cause the overhead to increase above the ticked overhead.
I remain unconvinced. Firstly the timer changes do not have to
occur at schedule rate unless your implementaiton is incredibly naiive.
Secondly for the specfic schedule case done that way, it would be even more
naiive to use the standard timer api over a single compare to getthe
timer list versus schedule clock.
next prev parent reply other threads:[~2002-04-24 1:23 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 ` Andi Kleen
2002-04-23 19:09 ` george anzinger
2002-04-24 1:42 ` Alan Cox [this message]
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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=E170BnK-0001VB-00@the-village.bc.nu \
--to=alan@lxorguk.ukuu.org.uk \
--cc=ak@suse.de \
--cc=george@mvista.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®