linux-kernel - Re: Linux 2.6.30-rc8 [also: VIA Support]

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Message-ID: <20090608055623.GA1444@ucw.cz>
Date:	Mon, 8 Jun 2009 07:56:24 +0200
From:	Pavel Machek <pavel@....cz>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Michael S. Zick" <lkml@...ethan.org>,
	Duane Griffin <duaneg@...da.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Harald Welte <HaraldWelte@...tech.com>
Subject: Re: Linux 2.6.30-rc8 [also: VIA Support]

On Thu 2009-06-04 10:07:37, Linus Torvalds wrote:
> 
> 
> Side note: is it more stable if you disable the VIA speedstep thing 
> (whatever it's called (ok, google tells me it's called "TwinTurbo" and 
> "Advanced PowerSaver")?
> 
> Features like that easily put a huge stress on power regulators etc, if 
> they result in sudden changes in current draw.  Underspecced capacitors 
> etc can cause CPU "brown-outs", which in turn can easily cause total 
> failure. 

If you try that, do idle=poll too. Hides class of bugs related to deep
idle states.

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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