linux-kernel - Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy)

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Date:	Wed, 25 Apr 2007 18:50:46 +1000
From:	Nigel Cunningham <nigel@...el.suspend2.net>
To:	Xavier Bestel <xavier.bestel@...e.fr>
Cc:	Pavel Machek <pavel@....cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Christian Hesse <mail@...thworm.de>,
	Nick Piggin <npiggin@...e.de>, Mike Galbraith <efault@....de>,
	linux-kernel@...r.kernel.org, Con Kolivas <kernel@...ivas.org>,
	suspend2-devel@...ts.suspend2.net,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2:
	hang in atomic copy)

Hi.

On Wed, 2007-04-25 at 10:48 +0200, Xavier Bestel wrote:
> On Wed, 2007-04-25 at 07:23 +0000, Pavel Machek wrote:
> > > I absolutely detest all suspend-to-disk crap. Quite frankly, I hate the 
> > > whole thing. I think they've _all_ caused problems for the "true" suspend 
> > > (suspend-to-ram), and the last thing I want to see is three or four 
> > 
> > Well, it is a bit more complex than that.
> > 
> > suspend-to-disk is a workaround for
> > 
> >         'suspend-to-ram eats too much power' (plus some details like
> >         being able to replace battery).
> > 
> > suspend-to-ram is a workaround for
> > 
> >         'idle machine takes way too much power' (plus some details
> >         like don't spin the disk so that machine is safe to carry).
> 
> I think it depends on who you ask. I personally think that suspend-to-
> $youchoose is a workaround for the slowness of system startup. I never
> turn off my laptop, I just suspend it.
> 
> (And guess what, it uses APM and suspend is really faster and way more
> reliable than each kernel implementation I could try).

If you tried Suspend2 and had problems with reliability, please send me
logs. I'll do all I can to help. (I have to qualify it a bit, because
I'm not able to fix drivers, but if it's a Suspend2 issue, tell me and
I'll fix it).

Regards,

Nigel

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