From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: 2.6.21-rc4-mm1 Date: Tue, 20 Mar 2007 19:38:21 +0100 Message-ID: <20070320183821.GD2670@elf.ucw.cz> References: <20070319205623.299d0378.akpm@linux-foundation.org> <45FFF026.4030502@gmail.com> <20070320080944.9cb3c765.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: <20070320080944.9cb3c765.akpm@linux-foundation.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: Andrew Morton Cc: linux-pm@lists.osdl.org, Jiri Slaby , linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org 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. > hm, OK. Rafael has been working on fixing the process freezer and it'll > take some time to get it to where we want it to be, I expect. > Rafael, I think that we could afford to add heaps of debug in there at th= is > stage to help us track down problems like this. > = > 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. Pavel -- = (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html