From: john stultz <johnstul@us.ibm.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: lkml <linux-kernel@vger.kernel.org>,
Tim Schmielau <tim@physik3.uni-rostock.de>,
George Anzinger <george@mvista.com>,
albert@users.sourceforge.net,
Ulrich Windl <ulrich.windl@rz.uni-regensburg.de>,
Dominik Brodowski <linux@dominikbrodowski.de>,
David Mosberger <davidm@hpl.hp.com>, Andi Kleen <ak@suse.de>,
paulus@samba.org, schwidefsky@de.ibm.com,
keith maanthey <kmannth@us.ibm.com>,
Patricia Gaughen <gone@us.ibm.com>,
Chris McDermott <lcm@us.ibm.com>, Max Asbock <amax@us.ibm.com>,
mahuja@us.ibm.com, Nishanth Aravamudan <nacc@us.ibm.com>,
Darren Hart <darren@dvhart.com>,
"Darrick J. Wong" <djwong@us.ibm.com>,
Anton Blanchard <anton@samba.org>
Subject: Re: [RFC][PATCH] new timeofday core subsystem (v. A2)
Date: Mon, 24 Jan 2005 16:33:42 -0800 [thread overview]
Message-ID: <1106613222.30884.34.camel@cog.beaverton.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0501241606240.17986@schroedinger.engr.sgi.com>
On Mon, 2005-01-24 at 16:08 -0800, Christoph Lameter wrote:
> On Mon, 24 Jan 2005, john stultz wrote:
> > Yep, performance is a big concern. Re-working ntp_scale() is still on my
> > TODO list. I just didn't get to it in this release.
>
> This is a hopeless endeavor if you look at the function.
> Throw ntp_scale out and calculate a scaling factor during the ticks. At
> tick time then you may forward the clock a few ns in order to correct it
> otherwise monkey around with the scaling factor.
We talked about this last time. I do intend to re-work ntp_scale() so
its not a function call, much as you describe above.
hopelessly endeavoring,
-john
next prev parent reply other threads:[~2005-01-25 0:35 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-24 22:51 john stultz
2005-01-24 22:52 ` [RFC][PATCH] new timeofday arch specific hooks " john stultz
2005-01-24 22:53 ` [RFC][PATCH] new timeofday arch specific timesources " john stultz
2005-01-24 23:29 ` Christoph Lameter
2005-01-25 0:04 ` john stultz
2005-01-25 2:28 ` [RFC][PATCH] new timeofday arch specific hooks " Benjamin Herrenschmidt
2005-01-25 23:09 ` john stultz
2005-01-25 23:53 ` Benjamin Herrenschmidt
2005-01-26 0:17 ` john stultz
2005-01-26 0:34 ` Christoph Lameter
2005-01-26 3:29 ` Benjamin Herrenschmidt
2005-01-26 16:51 ` Christoph Lameter
2005-01-26 3:14 ` Benjamin Herrenschmidt
2005-01-24 23:24 ` [RFC][PATCH] new timeofday core subsystem " Christoph Lameter
2005-01-25 0:03 ` john stultz
2005-01-25 0:08 ` Christoph Lameter
2005-01-25 0:33 ` john stultz [this message]
2005-01-25 1:54 ` Christoph Lameter
2005-01-25 7:50 ` Ulrich Windl
2005-01-25 12:25 ` Tim Schmielau
2005-01-25 7:41 ` Ulrich Windl
2005-01-25 8:17 ` Andi Kleen
2005-01-25 23:18 ` john stultz
2005-02-01 22:06 ` Tim Bird
2005-02-01 22:48 ` john stultz
2005-02-01 23:14 ` Nigel Cunningham
2005-02-01 23:32 ` john stultz
2005-02-02 0:04 ` Nigel Cunningham
2005-02-02 0:27 ` john stultz
2005-02-02 0:36 ` Nigel Cunningham
2005-02-01 23:53 ` Tim Bird
2005-02-02 0:19 ` john stultz
2005-02-02 1:48 ` Tim Bird
2005-02-02 2:00 ` john stultz
2005-02-02 2:23 ` Nigel Cunningham
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