linux-kernel - Re: 2.6.21-rc4-mm1

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Message-ID: <4600389E.6030901@gmail.com>
Date:	Tue, 20 Mar 2007 20:40:14 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Pavel Machek <pavel@....cz>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pm@...ts.osdl.org,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.21-rc4-mm1

Pavel Machek napsal(a):
> Hi!
> 
>>> Andrew Morton napsal(a):
>>>>   http://userweb.kernel.org/~akpm/2.6.21-rc4-mm1/
>>> I'm getting this while trying to swsusp:
>>> Stopping tasks ...
>>> Stopping kernel threads timed out after 20 seconds (1 tasks refusing to freeze):
>>>  swapper
>>>  Restarting tasks ... done.
>>>
>>> What to test? Enable PM_DEBUG?
> 
> Is it repeatable? Freezer normally works better than that.

Yes, at least it happened 3 times consecutively, when I tried to asleep the
machine, then I turned it off.

>> Also, it might be useful to add a temporary /proc/freeze-unfreeze thing
>> which will simply do a freeze/unfreeze cycle.  Then we can apply various
>> workloads to the machine while madly stressing the freezer code.  
> 
> echo testproc > /sys/power/disk; echo disk > /sys/power/state ... is
> pretty much what you want.

Ok, I'll try this.

thanks,
-- 
http://www.fi.muni.cz/~xslaby/            Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8  22A0 32CC 55C3 39D4 7A7E
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