From: Andi Kleen <ak@suse.de>
To: George Anzinger <george@mvista.com>
Cc: Christoph Lameter <clameter@sgi.com>,
john stultz <johnstul@us.ibm.com>,
Albert Cahalan <albert@users.sourceforge.net>,
lkml <linux-kernel@vger.kernel.org>,
tim@physik3.uni-rostock.de, Ulrich.Windl@rz.uni-regensburg.de,
Len Brown <len.brown@intel.com>,
linux@dominikbrodowski.de, David Mosberger <davidm@hpl.hp.com>,
Andi Kleen <ak@suse.de>,
paulus@samba.org, schwidefsky@de.ibm.com, jimix@us.ibm.com,
keith maanthey <kmannth@us.ibm.com>, greg kh <greg@kroah.com>,
Patricia Gaughen <gone@us.ibm.com>,
Chris McDermott <lcm@us.ibm.com>
Subject: Re: [RFC][PATCH] new timeofday core subsystem (v.A0)
Date: Wed, 15 Sep 2004 11:12:32 +0200 [thread overview]
Message-ID: <20040915091232.GA22158@wotan.suse.de> (raw)
In-Reply-To: <4147F774.6000800@mvista.com>
> I really think a tickless system, for other than UML systems, is a loosing
> thing. The accounting overhead on context switch (which increases as the
You can run the accounting independently at much lower frequency (10ms is
perfectly fine as 2.4 has proven - i suspect even lower would be ok too)
IMHO it should be a sysctl so that users can do a trade off between
power consumption and accounting accuracy.
And there is one important special that doesn't need any accounting
for user space at all: the idle loop.
It still needs some way to account interrupts, but that could be done
in do_IRQ or also do with rather low frequency.
-Andi
next prev parent reply other threads:[~2004-09-15 9:14 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-02 21:07 [RFC] New Time of day proposal (updated 9/2/04) john stultz
2004-09-02 21:09 ` [RFC][PATCH] new timeofday core subsystem (v.A0) john stultz
2004-09-02 21:11 ` [RFC][PATCH] new timeofday i386 hooks (v.A0) john stultz
2004-09-02 21:12 ` [RFC][PATCH] new timeofday i386 timesources (v.A0) john stultz
2004-09-03 1:44 ` [RFC][PATCH] new timeofday i386 hooks (v.A0) George Anzinger
2004-09-03 2:06 ` john stultz
2004-09-03 8:07 ` Ulrich Windl
2004-09-03 18:09 ` George Anzinger
2004-09-02 22:19 ` [RFC][PATCH] new timeofday core subsystem (v.A0) Christoph Lameter
2004-09-02 22:28 ` john stultz
2004-09-02 22:42 ` Christoph Lameter
2004-09-02 23:14 ` john stultz
2004-09-02 23:39 ` Christoph Lameter
2004-09-03 0:07 ` john stultz
2004-09-03 0:47 ` Christoph Lameter
2004-09-03 1:30 ` john stultz
2004-09-03 7:43 ` George Anzinger
2004-09-03 19:32 ` john stultz
2004-09-03 16:18 ` Christoph Lameter
2004-09-03 21:00 ` john stultz
2004-09-03 22:04 ` Christoph Lameter
2004-09-03 23:00 ` john stultz
2004-09-04 0:11 ` Christoph Lameter
2004-09-03 1:39 ` George Anzinger
2004-09-03 1:58 ` john stultz
2004-09-03 6:42 ` Albert Cahalan
2004-09-03 7:24 ` George Anzinger
2004-09-03 19:27 ` john stultz
2004-09-03 22:10 ` George Anzinger
2004-09-03 23:32 ` john stultz
2004-09-04 0:02 ` George Anzinger
2004-09-08 18:07 ` john stultz
2004-09-09 0:08 ` George Anzinger
2004-09-09 0:51 ` john stultz
2004-09-09 3:14 ` Christoph Lameter
2004-09-09 3:32 ` john stultz
2004-09-09 4:31 ` George Anzinger
2004-09-09 6:37 ` Jesse Barnes
2004-09-09 8:09 ` George Anzinger
2004-09-09 19:07 ` john stultz
2004-09-09 20:49 ` George Anzinger
2004-09-13 21:29 ` Christoph Lameter
2004-09-13 22:25 ` john stultz
2004-09-13 22:45 ` Christoph Lameter
2004-09-14 6:53 ` Ulrich Windl
2004-09-14 17:49 ` Christoph Lameter
2004-09-15 0:57 ` George Anzinger
2004-09-15 3:32 ` Christoph Lameter
2004-09-15 8:04 ` George Anzinger
2004-09-15 8:54 ` Dominik Brodowski
2004-09-15 17:54 ` George Anzinger
2004-09-15 9:12 ` Andi Kleen [this message]
2004-09-15 15:46 ` Christoph Lameter
2004-09-15 18:00 ` George Anzinger
2004-09-15 18:28 ` Christoph Lameter
2004-09-15 6:46 ` Christoph Lameter
2004-09-15 16:32 ` john stultz
2004-09-15 16:46 ` Christoph Lameter
2004-09-15 17:13 ` john stultz
2004-09-15 17:30 ` Christoph Lameter
2004-09-15 18:48 ` john stultz
2004-09-15 19:58 ` George Anzinger
2004-09-15 20:20 ` Christoph Lameter
2004-09-16 7:02 ` Ulrich Windl
2004-09-03 19:18 ` john stultz
2004-09-02 22:09 ` [RFC] New Time of day proposal (updated 9/2/04) Christoph Lameter
2004-09-02 22:22 ` john stultz
2004-09-02 22:47 ` Christoph Lameter
2004-09-03 9:54 ` Dominik Brodowski
2004-09-03 19:41 ` john stultz
2004-09-03 20:26 ` Dominik Brodowski
2004-09-03 21:05 ` john stultz
2004-09-06 6:26 ` Ulrich Windl
2004-09-06 11:56 ` Alan Cox
2004-09-07 16:14 ` Christoph Lameter
2004-09-03 15:17 ` Andi Kleen
2004-09-03 20:11 ` john stultz
2004-09-04 13:00 ` Andi Kleen
2004-09-07 16:10 ` Christoph Lameter
2004-09-07 18:24 ` George Anzinger
2004-09-07 20:55 ` Christoph Lameter
2004-09-07 21:42 ` George Anzinger
2004-09-08 6:26 ` Ulrich Windl
2004-09-08 18:25 ` john stultz
[not found] <413850B9.15119.BA95FD@rkdvmks1.ngate.uni-regensburg.de>
[not found] ` <1094224071.431.7758.camel@cube>
2004-09-06 6:08 ` [RFC][PATCH] new timeofday core subsystem (v.A0) Ulrich Windl
2004-09-12 17:11 ` Albert Cahalan
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=20040915091232.GA22158@wotan.suse.de \
--to=ak@suse.de \
--cc=Ulrich.Windl@rz.uni-regensburg.de \
--cc=albert@users.sourceforge.net \
--cc=clameter@sgi.com \
--cc=davidm@hpl.hp.com \
--cc=george@mvista.com \
--cc=gone@us.ibm.com \
--cc=greg@kroah.com \
--cc=jimix@us.ibm.com \
--cc=johnstul@us.ibm.com \
--cc=kmannth@us.ibm.com \
--cc=lcm@us.ibm.com \
--cc=len.brown@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@dominikbrodowski.de \
--cc=paulus@samba.org \
--cc=schwidefsky@de.ibm.com \
--cc=tim@physik3.uni-rostock.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.