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From: Hans-Peter Jansen <hpj@urpla.net>
Organization: LISA GmbH
To: Mark Hahn <hahn@physics.mcmaster.ca>
Subject: Re: [patch] amd athlon cooling on kt266/266a chipset
Date: Thu, 24 Jan 2002 19:25:02 +0100
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On Thursday, 24. January 2002 18:24, Mark Hahn wrote:
> > > > 1-2 degrees is within the sensor's deviation.   Either you dont have
> > > > it working correctly or it doesn't work at all in your case.
> > > >
> > > > You also need acpi idle calls, not just apm.   now this is just my
> > > > guess but apm idle calls might either mess things up or be disabled
> > > > if acpi idle calls are used and disconnecting the cpu... either way 
> > > > you can't have this patch work and apm work at the same time.
> > >
> > > or the vlc makes enough load on the mashine that there is no realy
> > > power saving ...
> >
> > No, vlc creates between 15% and 25% load, when using XVideo output
> > without
>
> the issue is whether there is a long-enough period of idleness.
> what's your framerate?  that's what matters, not the (known-inaccurate)
> %CPU accounting.

Ordinary pal encoded mpeg2 files plays with 25 frames per sec.

As I wrote, vlc plays smooth and fine _without_ amd_disconnect with the
documented load. With disconnect, vlc suffers from sound drop outs but I 
haven't digged further in this vlc issue, as it was clearly related to the 
cpu disconnect feature. Also, there were noticable delays in actions
like starting a Xterm via shortcut of approx. 0.5 sec, which I don't
see without disconnect.

Because of the mutual exclusive nature of this feature, I filed it
under unfinished hardware feature.

On behalf of power saving, I will look into swsusp/ACPI suspend again soon.

Cheers,
  Hans-Peter
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