linux-kernel - Re: [PATCH 0/8] device async action mechanism

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Date:	Thu, 16 Jul 2009 10:14:43 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-pm <linux-pm@...ts.linux-foundation.org>,
	linux-acpi <linux-acpi@...r.kernel.org>,
	Len Brown <lenb@...nel.org>, arjan@...ux.intel.com,
	"Van De Ven, Arjan" <arjan.van.de.ven@...el.com>
Subject: Re: [PATCH 0/8] device async action mechanism

On Wed, 2009-07-15 at 18:41 +0800, Andi Kleen wrote:
> Zhang Rui <rui.zhang@...el.com> writes:
> >
> > Currently, in order to make sure that it won't bring any side effects,
> > I only convert the ACPI battery and i8042 to use this framework, which reduces
> > 0.5s+ S3 time(suspend time plus resume time)ï»¿, from 7.0s to less than 6.5s.
> 
> 10.5s+ was intended I guess?
> 
what do you mean?

the kernel device suspend time is reduced from 3.2s to 2.8s after
applying this patch set in my test box.
And I get more optimistic numbers on another laptop, an Eeepc 901,
from about 2s to 1.6s. And the shutdown time is also reduced 0.4s.

thanks,
rui



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