linux-kernel - Re: A kexec approach to hibernation

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Message-Id: <1181036453.6863.172.camel@frg-rhel40-em64t-04>
Date:	Tue, 05 Jun 2007 11:40:53 +0200
From:	Xavier Bestel <xavier.bestel@...e.fr>
To:	Stefan Seyfried <seife@...e.de>
Cc:	nigel@...el.suspend2.net,
	Jeremy Maitin-Shepard <jmaitins@...rew.cmu.edu>,
	Pavel Machek <pavel@....cz>,
	Jeremy Maitin-Shepard <jbms@....edu>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: A kexec approach to hibernation

On Tue, 2007-06-05 at 11:34 +0200, Stefan Seyfried wrote:
> On Tue, Jun 05, 2007 at 10:15:41AM +0200, Xavier Bestel wrote:
> > FWIW, on my old laptop apm beats any kernel solution hands down in terms
> > of speed
> 
> This might be true on 64MB systems. It is surely not true on multi-Gigabyte-
> RAM setups. At least not if you actually use that memory for anything
> including filesystem cache.
> And you simply cannot buy a new machine today that still supports APM suspend
> to disk.

I don't contest that. I just say that technically, an "external kernel"
can suspend/hibernate a laptop very well.

	Xav


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