From: Ingo Molnar Subject: Re: [BUG] Strange 1-second pauses during Resume-from-RAM Date: Sat, 1 Dec 2007 19:32:56 +0100 Message-ID: <20071201183256.GA14052@elte.hu> References: <20071115181418.GA6603@ucw.cz> <473C825E.3030307@rtr.ca> <20071115193424.GA31691@elte.hu> <20071115193612.GA751@elte.hu> <20071130125628.GA30773@lazybastard.org> <20071130133546.GB29679@elte.hu> <20071130134312.GA32273@elte.hu> <20071130183510.GA1570@lazybastard.org> <20071130184625.GB9928@elte.hu> <20071201151650.GA5031@lazybastard.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: <20071201151650.GA5031@lazybastard.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: =?iso-8859-1?Q?J=F6rn?= Engel Cc: len.brown@intel.com, linux-kernel@vger.kernel.org, Mark Lord , Mark Lord , Thomas Gleixner , linux-pm@lists.linux-foundation.org, Andrew Morton List-Id: linux-pm@vger.kernel.org * J=F6rn Engel wrote: > > hm, that looks weird. if you disable CONFIG_PROVE_LOCKING, does that=20 > > improve things? (or just turns a noisy lockup into a silent lockup?) >=20 > Not much, although the dumps look different now: > http://logfs.org/~joern/trace3.jpg > http://logfs.org/~joern/trace4.jpg >=20 > I have to change my qemu setup a little to see the top of those=20 > dumps... btw., if you start qemu like this: qemu -cdrom ./cdrom.iso -hda ./hda.img -boot c -full-screen -kernel=20 ~/bzImage -append "root=3D/dev/hda1 earlyprintk=3Dserial,ttyS0,9600=20 console=3Dtty console=3DttyS0,9600 enforcing=3D0 debug" you'll get the inner kernel's serial console log to qemu's standard=20 output. Pretty useful for capturing kernel crashes. Ingo