linux-kernel - Re: When will the lunacy end? (Was Re: [PATCH] uswsusp: add pmops->{prepare,enter,finish} support (aka "platform mode"))

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Message-Id: <200609272313.31474.rjw@sisk.pl>
Date:	Wed, 27 Sep 2006 23:13:30 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Andrew Morton <akpm@...l.org>
Cc:	Pavel Machek <pavel@....cz>,
	Nigel Cunningham <ncunningham@...uxmail.org>,
	Stefan Seyfried <seife@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: When will the lunacy end? (Was Re: [PATCH] uswsusp: add pmops->{prepare,enter,finish} support (aka "platform mode"))

On Wednesday, 27 September 2006 23:08, Andrew Morton wrote:
> On Wed, 27 Sep 2006 11:09:02 +0200
> Pavel Machek <pavel@....cz> wrote:
> 
> > Hi!
> > 
> > > > Is "swapoff -a; echo disk > /sys/power/state" slow for you? If so, we
> > > > have something reasonably easy to debug, if not, we'll try something
> > > > else...
> > > 
> > > sony:/home/akpm# swapoff -a 
> > > sony:/home/akpm# time (echo disk > /sys/power/state) 
> > > echo: write error: no such device
> > > (; echo disk > /sys/power/state; )  0.00s user 0.08s system 1% cpu 5.259 total
> > > 
> > > It took an additional two-odd seconds to bring the X UI back into a serviceable
> > > state.
> > 
> > Console switches take long... yes it would be nice to fix X :-).
> > 
> > But we did not reproduce that 12 seconds problem. Can you try patches
> > from
> > 
> > http://marc.theaimsgroup.com/?l=linux-acpi&m=115506915023030&q=raw
> > 
> 
> OK, that compiles.
> 
> I think we should get this documented and merge it (or something like it) into
> mainline.  This is one area where it's worth investing in debugging tools.
> 
> If you agree, are we happy with it in its present form?

I am. ;-)
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