From: Nigel Cunningham <nigel@suspend2.net>
Organization: Suspend2.net
To: Pavel Machek <pavel@ucw.cz>
Subject: Re: [ 01/10] [Suspend2] kernel/power/modules.h
Date: Thu, 2 Feb 2006 20:30:47 +1000
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Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, Pekka Enberg <penberg@cs.helsinki.fi>,
       linux-kernel@vger.kernel.org
References: <20060201113710.6320.68289.stgit@localhost.localdomain> <200602020931.29796.rjw@sisk.pl> <20060202093859.GA1884@elf.ucw.cz>
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Hi.

On Thursday 02 February 2006 19:38, Pavel Machek wrote:
> Hi!
>
> > Its limitation , however, is that it requires a lot of memory for the
> > system memory snapshot which may be impractical for systems with limited
> > RAM, and that's where your solution may be required.
>
> Actually, suspend2 has similar limitation. It still needs half a
> memory free, but it does not count caches into that as it can save
> them separately.
>
> That means that on certain small systems (32MB RAM?), suspend2 is going to
> have big advantage of responsivity after resume. But on the systems
> where [u]swsusp can't suspend (6MB RAM?), suspend2 is not going to be
> able to suspend, either. [Roughly; due to bugs and implementation
> differences there may be some system size where one works and second
> one does not, but they are pretty similar]
>
> But that's probably not a problem as it is only going to fail on
> *very* small system. Desktops with 6MB RAM are not too common these
> days, fortunately. Not even in embedded space.

=46ully agree.

Regards,

Nigel
=2D-=20
See our web page for Howtos, FAQs, the Wiki and mailing list info.
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