From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Jan Beulich <JBeulich@novell.com>
Cc: Martin Meier <martin4meier@googlemail.com>,
xen-devel@lists.xensource.com
Subject: Re: XEN increases idle power consumption by 25%
Date: Wed, 24 Aug 2011 12:33:01 -0700 [thread overview]
Message-ID: <4E5551ED.9090704@goop.org> (raw)
In-Reply-To: <4E5518EF0200007800052EC6@nat28.tlf.novell.com>
On 08/24/2011 06:29 AM, Jan Beulich wrote:
>>>> On 24.08.11 at 14:03, Martin Meier <martin4meier@googlemail.com> wrote:
>> Hi,
>>
>> I'm seeing a change in AC idle power consumption from ~23W to ~29W
>> when changing form 3.1-rc2 to 3.1-rc2 on top of xen-4.2-unstable with no
>> domUs running.
>>
>> It seems that the CPU never gets into the low power idle state for the whole
>> CPU-package 'PC6'
>> and the Vcore voltage never gets below +1.06 V (It get down to 0.7V w/o
>> xen).
> This has been discussed recently; see e.g. the thread starting at
> http://lists.xensource.com/archives/html/xen-devel/2011-08/msg00511.html.
Also, upstream Linux doesn't have the patches to pass the power state
stuff through to Xen, which I guess it part of it?
J
next prev parent reply other threads:[~2011-08-24 19:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-24 12:03 XEN increases idle power consumption by 25% Martin Meier
2011-08-24 13:29 ` Jan Beulich
2011-08-24 19:33 ` Jeremy Fitzhardinge [this message]
2011-08-24 22:25 ` Konrad Rzeszutek Wilk
2011-08-29 15:30 ` Martin Meier
2011-08-29 20:09 ` Konrad Rzeszutek Wilk
2011-08-30 12:19 ` Martin Meier
2011-08-30 14:25 ` Konrad Rzeszutek Wilk
2011-08-25 6:59 ` Jan Beulich
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=4E5551ED.9090704@goop.org \
--to=jeremy@goop.org \
--cc=JBeulich@novell.com \
--cc=martin4meier@googlemail.com \
--cc=xen-devel@lists.xensource.com \
/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.