linux-kernel - Re: Memory allocation problem with 2.6.22 after suspend/resume cycle

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Date:	Sun, 23 Sep 2007 15:38:46 +0300
From:	"Christian P. Schmidt" <charlie@...add.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>,
	Len Brown <lenb@...nel.org>
Subject: Re: Memory allocation problem with 2.6.22 after suspend/resume cycle

Rafael J. Wysocki wrote:
> On Saturday, 22 September 2007 17:41, Christian P. Schmidt wrote:
>> Hi all,
>>
>> I'm having a strange problem, of course not reproducible. Sometimes
>> after a suspend (to ram) and resume cycle, the kernel will try to free
>> all memory. This means, all running applications are flushed to swap (as
>> long as it is available), caches and buffers stay at around 15MB each.
>>
>> The following video (traded quality for bandwidth) shows what happens on
>> the way from no swap to "swapon -a" (that's the unreadable thing in the
>> small shell): http://digadd.de/swapping.avi
>>
>> The system:
>> Linux dnnote 2.6.22.5 #1 SMP PREEMPT Sat Aug 25 18:39:21 AST 2007 x86_64
>> Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz GenuineIntel GNU/Linux
> 
> Are you using an ATI binary graphics driver?

Yes. I do not (yet) have a choice... can't wait for the open source drivers.


>> A 32bit Kernel is unable to suspend/resume at all. No idea why. dmesg
>> shows nothing, logs show nothing. Any ideas for debugging are welcome.
> 
> Well, that's interesting.
> 
> Can you try in the minimal configuration (ie. boot with init=/bin/bash,
> mount /sys, mount /proc and run "echo mem > /sys/power/disk)?

Which? the 32bit or the 64bit?

Regards,
Chris

> Greetings,
> Rafael

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