From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: [Bug #13306] hibernate slow on _second_ run Date: Mon, 1 Jun 2009 22:48:48 +0200 Message-ID: <200906012248.49304.rjw@sisk.pl> References: <4to6E2myxvG.A.muC.aIbIKB@chimera> <200906012226.46086.rjw@sisk.pl> <1243888860.5299.32.camel@johannes.local> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1243888860.5299.32.camel-YfaajirXv2244ywRPIzf9A@public.gmane.org> Content-Disposition: inline Sender: kernel-testers-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: Text/Plain; charset="us-ascii" To: Johannes Berg Cc: Linux Kernel Mailing List , Kernel Testers List On Monday 01 June 2009, Johannes Berg wrote: > On Mon, 2009-06-01 at 22:26 +0200, Rafael J. Wysocki wrote: > > On Sunday 31 May 2009, Johannes Berg wrote: > > > On Sat, 2009-05-30 at 21:37 +0200, Rafael J. Wysocki wrote: > > > > This message has been generated automatically as a part of a report > > > > of recent regressions. > > > > > > > > The following bug entry is on the current list of known regressions > > > > from 2.6.29. Please verify if it still should be listed and let me know > > > > (either way). > > > > > > > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13306 > > > > Subject : hibernate slow on _second_ run > > > > Submitter : Johannes Berg > > > > Date : 2009-05-14 09:34 (17 days old) > > > > > > I'm trying to get an ftrace profile that covers the point in question, > > > but it might take me a couple of days. > > > > Did it work? > > No, it's now hanging 20 seconds much later, after returning to > userspace :( But the dmesg log still has a hang of ~20.5 seconds just > like before, between two kernel messages... Hmm. Can you try to comment out suspend_device_irqs() and resume_device_irqs() in drivers/base/power/main.c and see what happens? Rafael From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757959AbZFAUsx (ORCPT ); Mon, 1 Jun 2009 16:48:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755214AbZFAUsq (ORCPT ); Mon, 1 Jun 2009 16:48:46 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:56234 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752811AbZFAUsp (ORCPT ); Mon, 1 Jun 2009 16:48:45 -0400 From: "Rafael J. Wysocki" To: Johannes Berg Subject: Re: [Bug #13306] hibernate slow on _second_ run Date: Mon, 1 Jun 2009 22:48:48 +0200 User-Agent: KMail/1.11.2 (Linux/2.6.30-rc6-rjw; KDE/4.2.3; x86_64; ; ) Cc: Linux Kernel Mailing List , Kernel Testers List References: <4to6E2myxvG.A.muC.aIbIKB@chimera> <200906012226.46086.rjw@sisk.pl> <1243888860.5299.32.camel@johannes.local> In-Reply-To: <1243888860.5299.32.camel@johannes.local> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200906012248.49304.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 01 June 2009, Johannes Berg wrote: > On Mon, 2009-06-01 at 22:26 +0200, Rafael J. Wysocki wrote: > > On Sunday 31 May 2009, Johannes Berg wrote: > > > On Sat, 2009-05-30 at 21:37 +0200, Rafael J. Wysocki wrote: > > > > This message has been generated automatically as a part of a report > > > > of recent regressions. > > > > > > > > The following bug entry is on the current list of known regressions > > > > from 2.6.29. Please verify if it still should be listed and let me know > > > > (either way). > > > > > > > > > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13306 > > > > Subject : hibernate slow on _second_ run > > > > Submitter : Johannes Berg > > > > Date : 2009-05-14 09:34 (17 days old) > > > > > > I'm trying to get an ftrace profile that covers the point in question, > > > but it might take me a couple of days. > > > > Did it work? > > No, it's now hanging 20 seconds much later, after returning to > userspace :( But the dmesg log still has a hang of ~20.5 seconds just > like before, between two kernel messages... Hmm. Can you try to comment out suspend_device_irqs() and resume_device_irqs() in drivers/base/power/main.c and see what happens? Rafael