From: Andrea Arcangeli <andrea@suse.de>
To: john stultz <johnstul@us.ibm.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: dynamic-hz
Date: Mon, 13 Dec 2004 23:21:38 +0100 [thread overview]
Message-ID: <20041213222138.GP16322@dualathlon.random> (raw)
In-Reply-To: <1102971389.1281.427.camel@cog.beaverton.ibm.com>
On Mon, Dec 13, 2004 at 12:56:29PM -0800, john stultz wrote:
> Interesting patch, I know some folks have been asking about HZ=10k
> recently, so this could help.
Yes, they only need to pass HZ=10000 to the boot command line to make it
work with 2.4.
> The only bit that worries me a bit is the change from HZ->USER_HZ for
> internal calculations. In my mind, USER_HZ should only be used for
> converting internal system ticks to userspace-visible ticks. Changing
> drivers to think about things in user-ticks confuses things a bit since
> suddenly some kernel code is thinking in user-ticks and others in
> system-ticks. It just muddles things a bit.
I tried to make the smallest possible change to make the thing work,
even if that sometime meant to think in user hz. The user_to_kernel_hz
helper function converts back into kernel hz.
prev parent reply other threads:[~2004-12-13 22:26 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-11 14:23 dynamic-hz Andrea Arcangeli
2004-12-11 14:50 ` dynamic-hz Zwane Mwaikambo
2004-12-12 6:57 ` dynamic-hz Andrea Arcangeli
2004-12-11 21:41 ` dynamic-hz Jan Engelhardt
2004-12-12 16:35 ` dynamic-hz Pavel Machek
2004-12-12 22:23 ` dynamic-hz Andrea Arcangeli
2004-12-12 23:36 ` dynamic-hz Con Kolivas
2004-12-12 23:42 ` dynamic-hz Pavel Machek
2004-12-13 0:09 ` dynamic-hz Con Kolivas
2004-12-13 8:37 ` dynamic-hz Jan Engelhardt
2004-12-13 10:43 ` dynamic-hz Pavel Machek
2004-12-13 11:08 ` dynamic-hz Andrea Arcangeli
2004-12-13 19:36 ` dynamic-hz john stultz
2004-12-12 23:43 ` dynamic-hz Andrea Arcangeli
2004-12-13 0:18 ` dynamic-hz Con Kolivas
2004-12-13 0:27 ` dynamic-hz Andrea Arcangeli
2004-12-13 1:50 ` dynamic-hz Zwane Mwaikambo
2004-12-13 11:28 ` dynamic-hz Andrea Arcangeli
2004-12-13 12:43 ` dynamic-hz Pavel Machek
2004-12-13 12:58 ` dynamic-hz Andrea Arcangeli
2004-12-13 19:12 ` dynamic-hz Pavel Machek
2004-12-13 20:34 ` dynamic-hz john stultz
2004-12-13 20:49 ` dynamic-hz Pavel Machek
2004-12-14 2:04 ` dynamic-hz Andrea Arcangeli
[not found] ` <20041214013924.GB14617@atomide.com>
2004-12-14 9:37 ` dynamic-hz Pavel Machek
2004-12-14 21:18 ` dynamic-hz Tony Lindgren
2004-12-14 22:06 ` dynamic-hz Pavel Machek
2004-12-14 23:00 ` dynamic-hz linux-os
2004-12-14 23:13 ` dynamic-hz Tony Lindgren
2004-12-22 20:02 ` dynamic-hz Tony Lindgren
2004-12-14 23:04 ` dynamic-hz Tony Lindgren
2004-12-14 2:46 ` dynamic-hz Andrea Arcangeli
2004-12-14 19:24 ` dynamic-hz john stultz
2004-12-14 2:36 ` dynamic-hz Andrea Arcangeli
2004-12-14 9:39 ` dynamic-hz Pavel Machek
2004-12-14 9:59 ` dynamic-hz Pavel Machek
2004-12-14 15:25 ` dynamic-hz Andrea Arcangeli
2004-12-14 22:02 ` USB making time drift [was Re: dynamic-hz] Pavel Machek
2004-12-14 23:16 ` Andrea Arcangeli
2004-12-15 2:59 ` Gene Heskett
2004-12-15 9:17 ` Andrea Arcangeli
2004-12-15 16:44 ` Gene Heskett
2004-12-15 18:20 ` Andrea Arcangeli
2004-12-16 1:59 ` Gene Heskett
2004-12-16 11:30 ` Andrea Arcangeli
2004-12-16 12:50 ` Alan Cox
2004-12-15 20:16 ` Pavel Machek
2004-12-16 2:02 ` Gene Heskett
2004-12-15 17:03 ` Gene Heskett
2004-12-15 17:48 ` Tim Schmielau
2004-12-16 2:03 ` Gene Heskett
2004-12-16 0:58 ` Pavel Machek
2004-12-16 2:33 ` john stultz
2004-12-16 1:15 ` Time goes crazy in 2.6.9 after long cli [was Re: USB making time drift] Pavel Machek
2004-12-16 11:13 ` Andrea Arcangeli
2004-12-16 12:49 ` Alan Cox
2004-12-13 14:50 ` dynamic-hz Zwane Mwaikambo
2004-12-13 7:43 ` dynamic-hz Stefan Seyfried
2004-12-13 13:58 ` dynamic-hz Russell King
2004-12-13 14:14 ` dynamic-hz Russell King
2004-12-13 14:52 ` dynamic-hz Alan Cox
2004-12-13 16:23 ` dynamic-hz Russell King
2004-12-13 17:53 ` dynamic-hz Michael Buesch
2004-12-13 18:04 ` dynamic-hz Russell King
2004-12-13 19:04 ` dynamic-hz Pavel Machek
2004-12-13 20:11 ` dynamic-hz Russell King
2004-12-14 0:16 ` dynamic-hz Eric St-Laurent
2004-12-15 18:04 ` dynamic-hz Alan Cox
2004-12-15 19:54 ` dynamic-hz linux-os
2004-12-16 2:17 ` dynamic-hz Gene Heskett
2004-12-16 12:42 ` dynamic-hz linux-os
2004-12-17 20:12 ` dynamic-hz H. Peter Anvin
2004-12-16 9:10 ` dynamic-hz Gabriel Paubert
2004-12-16 12:17 ` dynamic-hz Geert Uytterhoeven
2004-12-16 14:00 ` dynamic-hz Mitchell Blank Jr
2004-12-13 15:30 ` dynamic-hz Zwane Mwaikambo
2004-12-13 15:59 ` dynamic-hz Russell King
2004-12-13 16:14 ` dynamic-hz Pavel Machek
2004-12-13 16:06 ` dynamic-hz Pavel Machek
2004-12-13 16:19 ` dynamic-hz Jan Engelhardt
2004-12-13 8:29 ` dynamic-hz Jan Engelhardt
2004-12-14 22:54 ` dynamic-hz Lee Revell
2004-12-14 23:38 ` dynamic-hz Chris Friesen
2004-12-15 8:32 ` dynamic-hz Jan Engelhardt
2004-12-13 11:02 ` dynamic-hz Andrew Morton
2004-12-13 11:17 ` dynamic-hz Andrea Arcangeli
2004-12-13 11:25 ` dynamic-hz Andrew Morton
2004-12-13 11:47 ` dynamic-hz Andrea Arcangeli
2004-12-14 3:56 ` dynamic-hz Nish Aravamudan
2004-12-14 3:54 ` dynamic-hz Nish Aravamudan
2004-12-14 4:29 ` dynamic-hz Andrew Morton
2004-12-14 5:25 ` dynamic-hz Nish Aravamudan
2004-12-17 20:10 ` dynamic-hz Nish Aravamudan
2004-12-14 10:01 ` dynamic-hz Domen Puncer
2004-12-14 16:56 ` dynamic-hz Nish Aravamudan
2004-12-14 14:23 ` dynamic-hz linux-os
2004-12-14 16:54 ` dynamic-hz Nish Aravamudan
2004-12-14 17:15 ` dynamic-hz Andrea Arcangeli
2004-12-14 17:42 ` dynamic-hz Nish Aravamudan
2004-12-14 18:29 ` dynamic-hz Andrea Arcangeli
2004-12-14 19:00 ` dynamic-hz Nish Aravamudan
2004-12-14 18:22 ` dynamic-hz linux-os
2004-12-14 18:38 ` dynamic-hz Andrea Arcangeli
2004-12-14 18:50 ` dynamic-hz Pavel Machek
2004-12-13 11:19 ` dynamic-hz Hans Kristian Rosbach
2004-12-13 11:22 ` dynamic-hz Pavel Machek
2004-12-13 11:39 ` dynamic-hz Andrea Arcangeli
2004-12-13 12:51 ` dynamic-hz Hans Kristian Rosbach
2004-12-13 13:01 ` dynamic-hz Andrea Arcangeli
2004-12-13 13:02 ` dynamic-hz Andrea Arcangeli
2004-12-13 15:06 ` dynamic-hz Geert Uytterhoeven
2004-12-13 16:12 ` dynamic-hz Pavel Machek
2004-12-13 16:14 ` dynamic-hz Geert Uytterhoeven
2004-12-14 4:06 ` dynamic-hz Nish Aravamudan
2004-12-14 4:05 ` dynamic-hz Nish Aravamudan
2004-12-13 11:33 ` dynamic-hz Andrea Arcangeli
2004-12-13 14:38 ` dynamic-hz Zwane Mwaikambo
2004-12-13 12:00 ` dynamic-hz Alan Cox
2004-12-13 15:52 ` dynamic-hz Andrea Arcangeli
2004-12-14 22:28 ` dynamic-hz Lee Revell
2004-12-14 22:40 ` dynamic-hz Con Kolivas
2004-12-14 22:50 ` dynamic-hz Lee Revell
2004-12-13 20:26 ` dynamic-hz Olaf Hering
2004-12-13 22:41 ` dynamic-hz Andrea Arcangeli
2004-12-13 20:56 ` dynamic-hz john stultz
2004-12-13 22:21 ` Andrea Arcangeli [this message]
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