linux-kernel - Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

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Message-ID: <20061114225736.GB2676@elf.ucw.cz>
Date:	Tue, 14 Nov 2006 23:57:36 +0100
From:	Pavel Machek <pavel@....cz>
To:	Andrey Borzenkov <arvidjaar@...l.ru>
Cc:	Stefan Seyfried <seife@...e.de>, Zan Lynx <zlynx@....org>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

On Tue 2006-11-14 23:47:27, Andrey Borzenkov wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> On Tuesday 14 November 2006 17:23, Pavel Machek wrote:
> > Hi!
> >
> > > > > Maybe its a journal size thing, you could try "sync" before suspend
> > > > > and see if it helps.
> > > >
> > > > We already sync inside the kernel, it does not help here, though.
> > > > Blockdev freezing might help.
> > >
> > > is there patch applicable to vanilla kernel? After repairing reiser
> > > several times (due to hard lockups during suspend-to-RAM) that sounds
> > > even more interesting.
> >
> > Could you do the test Stefan asked? I do not think you'll kill
> > reiserfs by single forced powerdown.
> > 
> 
> well, I did it accidentally :) (forgot to plug in power and after 2 hours on 
> battery notebook simply switched off) and yes, there was some noticeable 
> delay loading grub. I also tried fs freezer without any visible effect. The 
> patches from mm I applied to vanilla kernel:
> 
> add-include-linux-freezerh-and-move-definitions-from.patch
> swsusp-cleanup-whitespace-in-freezer-output.patch
> swsusp-freeze-filesystems-during-suspend-rev-2.patch
> swsusp-thaw-userspace-and-kernel-space-separately.patch
> 
> Do I need some more patches for this to work?

I guess reiserfs would need to respond to filesystem freezing.

							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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