Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754919AbYAEKFQ (ORCPT ); Sat, 5 Jan 2008 05:05:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753379AbYAEKFD (ORCPT ); Sat, 5 Jan 2008 05:05:03 -0500 Received: from mail.isohunt.com ([208.71.112.20]:42273 "EHLO mail.isohunt.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753060AbYAEKFA (ORCPT ); Sat, 5 Jan 2008 05:05:00 -0500 Date: Sat, 5 Jan 2008 02:04:55 -0800 From: "Robin H. Johnson" To: Andrew Morton Cc: "Robin H. Johnson" , linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Paul Mackerras Subject: Re: Idle loadavg of ~1, maybe MD related Message-ID: <20080105100455.GB911@curie-int.orbis-terrarum.net> References: <20071230100614.GX17327@curie-int.orbis-terrarum.net> <20080105013037.a354b33a.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="pvezYHf7grwyp3Bc" Content-Disposition: inline In-Reply-To: <20080105013037.a354b33a.akpm@linux-foundation.org> User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3111 Lines: 78 --pvezYHf7grwyp3Bc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 05, 2008 at 01:30:37AM -0800, Andrew Morton wrote: > >From that I'd suspect that kwindfarm is being a bad citizen. > If a process is consistently stuck in D state, run Windfarm. > echo w > /proc/sysrq-trigger > then record the resulting dmesg output so we can see where it got stuck. Traceback: [552710.416174] SysRq : Show Blocked State [552710.417876] task PC stack pid father [552710.417888] kwindfarm D 0000000000000000 0 829 2 [552710.417892] Call Trace: [552710.417895] [c00000036c9835f0] [c000000000528b90] 0xc000000000528b90 (u= nreliable) [552710.417908] [c00000036c9837c0] [c00000000000f4a8] .__switch_to+0xd8/0x1= 10 [552710.417985] [c00000036c983850] [c0000000003bb2a0] .schedule+0x62c/0x6c8 [552710.417992] [c00000036c983940] [c0000000003bb8c4] .schedule_timeout+0x3= c/0xe8 [552710.417997] [c00000036c983a10] [c0000000003bb51c] .wait_for_common+0x10= 0/0x1bc [552710.418002] [c00000036c983ae0] [c000000000285300] .smu_fan_set+0x17c/0x= 1e4 [552710.418009] [c00000036c983c30] [c000000000284078] .pm112_wf_notify+0xc5= 0/0x12d0 [552710.418015] [c00000036c983d20] [c0000000003bfb84] .notifier_call_chain+= 0x5c/0xcc [552710.418021] [c00000036c983dc0] [c00000000006f4b4] .__blocking_notifier_= call_chain+0x70/0xb0 [552710.418027] [c00000036c983e70] [c000000000282d9c] .wf_thread_func+0x78/= 0x11c [552710.418032] [c00000036c983f00] [c000000000069b00] .kthread+0x78/0xc4 [552710.418039] [c00000036c983f90] [c000000000023d0c] .kernel_thread+0x4c/0= x68 [552710.418064] Sched Debug Version: v0.07, 2.6.24-rc6-prod-g6f0f5304 #10 [552710.418067] now at 552723945.170635 msecs [552710.418070] .sysctl_sched_latency : 60.000000 [552710.418073] .sysctl_sched_min_granularity : 12.000000 [552710.418076] .sysctl_sched_wakeup_granularity : 30.000000 [552710.418079] .sysctl_sched_batch_wakeup_granularity : 30.000000 [552710.418082] .sysctl_sched_child_runs_first : 0.000001 [552710.418085] .sysctl_sched_features : 7 Full output at http://dev.gentoo.org/~robbat2/20080105_windfarm_sysrq_w.txt --=20 Robin Hugh Johnson Gentoo Linux Developer & Infra Guy E-Mail : robbat2@gentoo.org GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85 --pvezYHf7grwyp3Bc Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.8 (GNU/Linux) Comment: Robbat2 @ Orbis-Terrarum Networks - The text below is a digital signature. If it doesn't make any sense to you, ignore it. iEYEARECAAYFAkd/VkcACgkQPpIsIjIzwiwMSACfWkMzPWiWGlwwcQU5XMd5PbAB zmMAn351fJtiNnbsoRVi2aUv10Rau7M1 =oZqf -----END PGP SIGNATURE----- --pvezYHf7grwyp3Bc-- -- 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/