From: Dominik Brodowski <linux@dominikbrodowski.net>
To: Erik Slagter <erik@slagter.name>
Cc: linux-kernel@vger.kernel.org, Jim serio <jseriousenet@gmail.com>,
Andrew Haninger <ahaning@gmail.com>
Subject: Re: C2/C3 on SMP [Was: Re: 2.6.X not recognizing second CPU]
Date: Wed, 29 Jun 2005 10:07:26 +0200 [thread overview]
Message-ID: <20050629080726.GA14930@isilmar.linta.de> (raw)
In-Reply-To: <1120030846.7429.32.camel@localhost.localdomain>
On Wed, Jun 29, 2005 at 09:40:45AM +0200, Erik Slagter wrote:
> On Tue, 2005-06-28 at 23:29 +0200, Dominik Brodowski wrote:
> > On Tue, Jun 28, 2005 at 01:32:59PM +0200, Erik Slagter wrote:
> > > On Mon, 2005-06-27 at 23:42 +0200, Dominik Brodowski wrote:
> > > > a) Power Management is available on SMP, though support for it is a bit less
> > > > wide-spread than it is for UP
> > >
> > > Still no C2/C3 handling :-(
> >
> > Uh, wasn't there a small, nice patch implementing this in bk-acpi a few
> > weeks ago?
> > *clicketyclick* Oh yes,
> > http://bugzilla.kernel.org/show_bug.cgi?id=4401
> > states it was merged into bk-acpi-test on 2005-04-22. However, I can't find
> > it in current -mm any more...
>
> You're probably talking about the amd768 module.
No, I'm not. I'm talking about plain ACPI C-States.
> I could use it, but I
> never got it working correctly, there is no actual power reduction. It
> may have to do with the fast (1000 Hz) 2.6 clock though, making it sleep
> in C2/C3 for only very short intervals. Also the selection for idle
> CPU's seems to be too simple.
The ACPI C-State selection algorithm needs a major overhaul, that's true.
Dominik
next prev parent reply other threads:[~2005-06-29 8:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-27 18:52 2.6.X not recognizing second CPU Jim serio
2005-06-27 19:35 ` Andrew Haninger
[not found] ` <3642108305062713487326b672@mail.gmail.com>
2005-06-27 21:02 ` Andrew Haninger
2005-06-27 21:42 ` Dominik Brodowski
2005-06-27 21:52 ` Jim serio
2005-06-28 11:32 ` Erik Slagter
2005-06-28 21:29 ` C2/C3 on SMP [Was: Re: 2.6.X not recognizing second CPU] Dominik Brodowski
2005-06-29 7:40 ` Erik Slagter
2005-06-29 8:07 ` Dominik Brodowski [this message]
2005-06-29 8:18 ` Erik Slagter
-- strict thread matches above, loose matches on Subject: below --
2005-06-28 21:43 Brown, Len
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