Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752550AbXKVQkt (ORCPT ); Thu, 22 Nov 2007 11:40:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750984AbXKVQkj (ORCPT ); Thu, 22 Nov 2007 11:40:39 -0500 Received: from pmx2.sophos.com ([213.31.172.17]:59454 "EHLO pmx2.sophos.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751403AbXKVQki (ORCPT ); Thu, 22 Nov 2007 11:40:38 -0500 In-Reply-To: To: linux-kernel@vger.kernel.org Cc: "Rafael J. Wysocki" Subject: Re: [2.6.24-rc] pdflush stuck in D state MIME-Version: 1.0 X-Mailer: Lotus Notes Release 6.5.5 November 30, 2005 Message-ID: From: tvrtko.ursulin@sophos.com Date: Thu, 22 Nov 2007 16:40:37 +0000 X-MIMETrack: Serialize by Router on Mercury/Servers/Sophos(Release 7.0.2FP1|January 10, 2007) at 22/11/2007 16:40:37, Serialize complete at 22/11/2007 16:40:37 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3951 Lines: 92 linux-kernel-owner@vger.kernel.org wrote on 22/11/2007 16:28:22: > linux-kernel-owner@vger.kernel.org wrote on 22/11/2007 16:34:01: > > > On Thursday, 22 of November 2007, Tvrtko A. Ursulin wrote: > > > > > > Hi all, > > > > > > So as the subject says - pdflush is stuck i D state which means > > constant load > > > average of at least one: > > > > > > root 151 0.0 0.0 0 0 ? D Nov20 0:33 > [pdflush] > > > > Hm, this is supposed to be fixed. Please see: > > http://bugzilla.kernel.org/show_bug.cgi?id=9323 > > Doesn't look like the same bug to me - I have only ever seen pdflush get > stuck in D, not random processes. > > Also, I can confirm that -rc3 I am running contains the patch referenced > in your bugzilla link above. Here is a trace for good and bad pdflush processes: Nov 22 16:35:09 oxygene kernel: ======================= Nov 22 16:35:09 oxygene kernel: pdflush S c014fe4e 0 150 2 Nov 22 16:35:09 oxygene kernel: 00000000 00000046 00000000 c014fe4e f7c30fa4 c014f9c6 f7ce8560 f7ce869c Nov 22 16:35:09 oxygene kernel: c201e100 00000001 fffffffc 00000002 00000000 00000000 00000000 00000000 Nov 22 16:35:09 oxygene kernel: 00000021 f7c30fc8 c014fe4e 00000000 00000000 c014ff09 00000202 f7ce8560 Nov 22 16:35:09 oxygene kernel: Call Trace: Nov 22 16:35:09 oxygene kernel: [pdflush+0/434] pdflush+0x0/0x1b2 Nov 22 16:35:09 oxygene kernel: [background_writeout+125/173] background_writeout+0x7d/0xad Nov 22 16:35:09 oxygene kernel: [pdflush+0/434] pdflush+0x0/0x1b2 Nov 22 16:35:09 oxygene kernel: [pdflush+187/434] pdflush+0xbb/0x1b2 Nov 22 16:35:09 oxygene kernel: [kthread+56/96] kthread+0x38/0x60 Nov 22 16:35:09 oxygene kernel: [kthread+0/96] kthread+0x0/0x60 Nov 22 16:35:09 oxygene kernel: [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10 Nov 22 16:35:09 oxygene kernel: ======================= Nov 22 16:35:09 oxygene kernel: pdflush D f7c3aef4 0 151 2 Nov 22 16:35:09 oxygene kernel: 0b83b953 00000046 00000002 f7c3aef4 f7c3aeec 00000000 f7ce8ac0 f7ce8bfc Nov 22 16:35:09 oxygene kernel: c201e100 00000001 f7c3af18 0b83b9cc f7c3af18 00000003 00000000 00000001 Nov 22 16:35:09 oxygene kernel: 00000000 f7c3af18 0b83b9cc f7c3af70 00000000 c027ddb7 f781e000 c010490c Nov 22 16:35:09 oxygene kernel: Call Trace: Nov 22 16:35:09 oxygene kernel: [schedule_timeout+112/141] schedule_timeout+0x70/0x8d Nov 22 16:35:09 oxygene kernel: [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30 Nov 22 16:35:09 oxygene kernel: [process_timeout+0/5] process_timeout+0x0/0x5 Nov 22 16:35:09 oxygene kernel: [schedule_timeout+107/141] schedule_timeout+0x6b/0x8d Nov 22 16:35:09 oxygene kernel: [io_schedule_timeout+27/36] io_schedule_timeout+0x1b/0x24 Nov 22 16:35:09 oxygene kernel: [congestion_wait+80/100] congestion_wait+0x50/0x64 Nov 22 16:35:09 oxygene kernel: [autoremove_wake_function+0/53] autoremove_wake_function+0x0/0x35 Nov 22 16:35:09 oxygene kernel: [pdflush+0/434] pdflush+0x0/0x1b2 Nov 22 16:35:09 oxygene kernel: [wb_kupdate+152/219] wb_kupdate+0x98/0xdb Nov 22 16:35:09 oxygene kernel: [pdflush+282/434] pdflush+0x11a/0x1b2 Nov 22 16:35:09 oxygene kernel: [wb_kupdate+0/219] wb_kupdate+0x0/0xdb Nov 22 16:35:09 oxygene kernel: [kthread+56/96] kthread+0x38/0x60 Nov 22 16:35:09 oxygene kernel: [kthread+0/96] kthread+0x0/0x60 Nov 22 16:35:09 oxygene kernel: [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10 Nov 22 16:35:09 oxygene kernel: ======================= Tvrtko Sophos Plc, The Pentagon, Abingdon Science Park, Abingdon, OX14 3YP, United Kingdom. Company Reg No 2096520. VAT Reg No GB 348 3873 20. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/