From: Joanna Rutkowska <joanna@invisiblethingslab.com>
To: Ian Pratt <Ian.Pratt@eu.citrix.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: A clocksource question
Date: Thu, 11 Mar 2010 01:52:25 +0100 [thread overview]
Message-ID: <4B983EC9.2030105@invisiblethingslab.com> (raw)
In-Reply-To: <4FA716B1526C7C4DB0375C6DADBC4EA3554D53F1B0@LONPMAILBOX01.citrite.net>
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On 03/11/2010 01:21 AM, Ian Pratt wrote:
>> The TSC delta is troubling... if you hadn't said you had turned
>> off all power management, I would have guessed a problem with
>> C-state management. Maybe Xen is discovering some power management
>> capability not visible in BIOS settings?
>
> Xen uses the architectural C state mechanism, bypassing ACPI.
> Use "max_cstate=0"
>
Tried it (as an argument to xen) and it didn't seem to help.
BTW, how does the clocksource=jiffies work on a pvops kernel in Dom0?
j.
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next prev parent reply other threads:[~2010-03-11 0:52 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 10:47 A clocksource question Joanna Rutkowska
2010-03-09 10:50 ` Keir Fraser
2010-03-09 10:54 ` Joanna Rutkowska
2010-03-09 11:06 ` Joanna Rutkowska
2010-03-09 12:07 ` Pasi Kärkkäinen
2010-03-09 12:10 ` Joanna Rutkowska
2010-03-09 15:42 ` Konrad Rzeszutek Wilk
2010-03-09 23:36 ` Jeremy Fitzhardinge
2010-03-10 22:13 ` Joanna Rutkowska
2010-03-11 0:07 ` Dan Magenheimer
2010-03-11 0:15 ` Joanna Rutkowska
2010-03-11 0:21 ` Ian Pratt
2010-03-11 0:44 ` Dan Magenheimer
2010-03-12 0:34 ` Joanna Rutkowska
2010-03-11 0:52 ` Joanna Rutkowska [this message]
2010-03-11 1:06 ` Jeremy Fitzhardinge
2010-03-11 1:19 ` Joanna Rutkowska
2010-03-11 4:55 ` Jeremy Fitzhardinge
2010-03-11 10:49 ` Joanna Rutkowska
2010-03-12 0:27 ` Joanna Rutkowska
2010-03-12 0:49 ` Jeremy Fitzhardinge
2010-03-12 0:38 ` Joanna Rutkowska
2010-03-12 19:02 ` Joanna Rutkowska
2010-03-12 21:24 ` Jeremy Fitzhardinge
2010-03-12 21:56 ` Tobias Geiger
2010-03-12 22:02 ` Jeremy Fitzhardinge
2010-03-12 21:01 ` Joanna Rutkowska
2010-03-12 21:13 ` Joanna Rutkowska
2010-03-12 23:48 ` Jeremy Fitzhardinge
2010-03-13 9:58 ` Joanna Rutkowska
2010-03-13 19:30 ` Jeremy Fitzhardinge
2010-03-15 6:49 ` Tobias Geiger
2010-03-16 6:01 ` Joanna Rutkowska
2010-03-17 13:35 ` Tobias Geiger
2010-03-17 15:21 ` Joanna Rutkowska
2010-03-17 16:20 ` Jeremy Fitzhardinge
2010-03-17 17:05 ` Joanna Rutkowska
2010-03-17 17:21 ` Jeremy Fitzhardinge
2010-03-17 16:26 ` Dan Magenheimer
2010-03-12 22:56 ` Tobias Geiger
2010-03-11 7:47 ` Keir Fraser
-- strict thread matches above, loose matches on Subject: below --
2010-03-12 11:42 Tobias Geiger
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