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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Date:	Tue, 26 Sep 2006 09:46:07 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Nigel Cunningham <ncunningham@...uxmail.org>,
	Stefan Seyfried <seife@...e.de>, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: When will the lunacy end? (Was Re: [PATCH] uswsusp: add
 pmops->{prepare,enter,finish} support (aka "platform mode"))

On Tue, 26 Sep 2006 12:24:34 +0200
Pavel Machek <pavel@....cz> wrote:

> 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.

It'd be nice to increase that 1% CPU utilisation...
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