From: "Roger Heflin" <rheflin@atipa.com>
To: "'Lee Revell'" <rlrevell@joe-job.com>,
"'linux-kernel'" <linux-kernel@vger.kernel.org>
Subject: RE: Dual core Athlons and unsynced TSCs
Date: Fri, 13 Jan 2006 09:10:36 -0600 [thread overview]
Message-ID: <EXCHG2003rmTIVvLVKi00000c7b@EXCHG2003.microtech-ks.com> (raw)
In-Reply-To: <1137104260.2370.85.camel@mindpipe>
> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org
> [mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Lee Revell
> Sent: Thursday, January 12, 2006 4:18 PM
> To: linux-kernel
> Subject: Dual core Athlons and unsynced TSCs
>
> It's been known for quite some time that the TSCs are not
> synced between cores on Athlon X2 machines and this screws up
> the kernel's timekeeping, as it still uses the TSC as the
> default time source on these machines.
>
> This problem still seems to be present in the latest kernels.
> What is the plan to fix it? Is the fix simply to make the
> kernel use the ACPI PM timer by default on Athlon X2?
Do we know if this also affects dual-core opterons?
The symptoms are that the clocks run at 2x the speed, correct?
Roger
next prev parent reply other threads:[~2006-01-13 15:00 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-12 22:17 Lee Revell
2006-01-13 15:10 ` Roger Heflin [this message]
2006-01-13 16:04 ` Steven Rostedt
2006-01-13 17:47 ` Lee Revell
2006-01-13 17:52 ` Steven Rostedt
2006-01-13 17:54 ` Lee Revell
2006-01-13 18:41 ` Steven Rostedt
2006-01-13 18:55 ` Lee Revell
2006-01-13 20:09 ` Steven Rostedt
2006-01-13 20:26 ` Steven Rostedt
2006-01-13 20:40 ` Lee Revell
2006-01-13 20:43 ` Lee Revell
2006-01-13 20:46 ` Thomas Gleixner
2006-01-13 20:48 ` Lee Revell
2006-01-13 20:51 ` Thomas Gleixner
2006-01-13 20:52 ` Steven Rostedt
2006-01-13 21:05 ` Steven Rostedt
2006-01-13 21:10 ` Thomas Gleixner
2006-01-13 21:17 ` Steven Rostedt
2006-01-16 9:52 ` Thomas Gleixner
2006-01-16 15:55 ` Steven Rostedt
2006-01-14 0:23 ` john stultz
2006-01-14 1:10 ` Steven Rostedt
2006-01-14 1:14 ` Lee Revell
2006-01-14 1:23 ` john stultz
2006-01-14 1:27 ` Lee Revell
2006-01-14 1:39 ` john stultz
2006-01-14 1:43 ` Steven Rostedt
2006-01-14 1:50 ` john stultz
2006-01-14 2:15 ` Steven Rostedt
2006-01-14 2:34 ` Steven Rostedt
2006-01-16 1:19 ` Andi Kleen
2006-01-14 6:54 ` Christoph Lameter
2006-01-13 18:06 ` thockin
2006-01-13 17:58 ` Lee Revell
2006-01-13 18:16 ` thockin
2006-01-13 18:09 ` Lee Revell
2006-01-13 18:55 ` thockin
2006-01-13 18:56 ` Sven-Thorsten Dietrich
2006-01-13 19:00 ` Lee Revell
2006-01-13 19:07 ` Sven-Thorsten Dietrich
2006-01-13 21:18 ` David Lang
2006-01-13 21:56 ` thockin
2006-01-13 22:05 ` David Lang
2006-01-13 22:18 ` Sven-Thorsten Dietrich
2006-01-13 22:49 ` David Lang
2006-01-14 0:41 ` Andreas Steinmetz
2006-01-14 1:04 ` David Lang
2006-01-14 1:21 ` Andreas Steinmetz
2006-01-14 1:51 ` thockin
2006-01-15 8:52 ` Zan Lynx
2006-01-15 16:25 ` thockin
2006-01-15 16:33 ` Lee Revell
2006-01-15 18:21 ` thockin
2006-01-15 18:29 ` Lee Revell
2006-01-15 18:49 ` thockin
2006-01-14 1:13 ` thockin
2006-01-13 22:23 ` thockin
2006-01-13 19:13 ` Xavier Bestel
2006-01-13 19:32 ` thockin
2006-01-13 20:58 ` Steven Rostedt
[not found] <5ujmj-1UQ-511@gated-at.bofh.it>
[not found] ` <5uBnF-2SG-11@gated-at.bofh.it>
[not found] ` <5uBnF-2SG-9@gated-at.bofh.it>
[not found] ` <5uBxi-3iM-21@gated-at.bofh.it>
[not found] ` <5uBGY-3ul-21@gated-at.bofh.it>
[not found] ` <5uCa5-443-45@gated-at.bofh.it>
[not found] ` <5uCjF-4fW-15@gated-at.bofh.it>
[not found] ` <5uCtj-4Fi-15@gated-at.bofh.it>
2006-01-14 0:24 ` Robert Hancock
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