linux-kernel - Re: PM: resume devices took 9.176 seconds

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Date:	Sat, 18 Jul 2009 15:46:06 +0200
From:	Alexey Fisher <bug-track@...her-privat.net>
To:	Pavel Machek <pavel@....cz>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Ingo Molnar <mingo@...e.hu>, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: PM: resume devices took 9.176 seconds

Pavel Machek schrieb:
> On Mon 2009-07-06 18:21:15, Alexey Fisher wrote:
>> Hallo all,
>> it testing a lot git tree especially suspend and resume. With my new  
>> Intel DG45ID board i get always this trace:
>>
>> ============================================
>> [  176.763922] PM: resume devices took 9.176 seconds
>> [  176.763924] ------------[ cut here ]------------
>> [  176.763930] WARNING: at kernel/power/suspend_test.c:52  
>> suspend_test_finish+0x7c/0x80()
>>
>> this is related with the commit:
>>    commit 77437fd4e61f87cc94d9314baa5cbf50e3ccdf54
>> Author: David Brownell <dbrownell@...rs.sourceforge.net>
>> Date:   Wed Jul 23 21:28:33 2008 -0700
>>
>> probobly it's depend  on this message:
>> [  173.076075] ata1: link is slow to respond, please be patient (ready=0)
>>
>> so it's looks normal for this board and harddrive. I think it should be  
>> some way to change default TEST_SUSPEND_SECONDS by .config or  
>> kernel-parameter. I changed default settings to 10 in  
>> kernel/power/suspend_test.c but this is not the way it should be done.
> 
> I'm not sure if that's normal. Does it also delay on boot?

I have same time with test_suspend=mem on boot and with normal suspend. 
Probably there is some thing wrong but it's seems for like it do the 
same in windows vista like in linux. In linux i use clean suspend... no 
distro scripts used... in dmesg i ken see that sata harddrive need some 
time to wake, so i think it's the reason for it.

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