From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751714AbWCARCM (ORCPT ); Wed, 1 Mar 2006 12:02:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751762AbWCARCM (ORCPT ); Wed, 1 Mar 2006 12:02:12 -0500 Received: from 213-205-70-85.net.novis.pt ([213.205.70.85]:30348 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S1751714AbWCARCL (ORCPT ); Wed, 1 Mar 2006 12:02:11 -0500 Message-ID: <4405D383.5070201@artenumerica.com> Date: Wed, 01 Mar 2006 17:01:55 +0000 From: J M Cerqueira Esteves User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051013) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: support@artenumerica.com Subject: oom-killer: gfp_mask=0xd1 with 2.6.12 on EM64T X-Enigmail-Version: 0.92.1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA4BBFBCDF22445C00D2586EB" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA4BBFBCDF22445C00D2586EB Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Greetings On a dual EM64T Xeon with 4GB of RAM, I am getting apparently "innocent" processes killed by oom-killer with gfp_mask=0xd1 (with all or almost all swap space still available). This happens when running a couple of Gaussian and other computational chemistry software processes each using ~ 800MB-1GB of RAM. Sometimes oom-killer kills one or two of those processes, with the kernel messages shown below. Unfortunately I don't have a simpler recipe to induce this behavior... (it may even be triggered only by some Gaussian runs with a particular set of input parameters; it doesn't happen always). I haven't tried 2.6.15 kernels yet, but according to recent reports in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175173 even those may still have oom-killer problems (like this?). Since I'm not yet familiar with the meaning of much of the data output in the following kernel messages, could someone suggest some appropriate course of action to troubleshoot this? Any recommended kernel versions/patches/settings? oom-killer: gfp_mask=0xd1 DMA per-cpu: cpu 0 hot: low 2, high 6, batch 1 cpu 0 cold: low 0, high 2, batch 1 cpu 1 hot: low 2, high 6, batch 1 cpu 1 cold: low 0, high 2, batch 1 cpu 2 hot: low 2, high 6, batch 1 cpu 2 cold: low 0, high 2, batch 1 cpu 3 hot: low 2, high 6, batch 1 cpu 3 cold: low 0, high 2, batch 1 Normal per-cpu: cpu 0 hot: low 62, high 186, batch 31 cpu 0 cold: low 0, high 62, batch 31 cpu 1 hot: low 62, high 186, batch 31 cpu 1 cold: low 0, high 62, batch 31 cpu 2 hot: low 62, high 186, batch 31 cpu 2 cold: low 0, high 62, batch 31 cpu 3 hot: low 62, high 186, batch 31 cpu 3 cold: low 0, high 62, batch 31 HighMem per-cpu: empty Free pages: 13436kB (0kB HighMem) Active:396041 inactive:586624 dirty:180807 writeback:0 unstable:0 free:3359 slab:22149 mapped:256439 pagetables:1997 DMA free:24kB min:28kB low:32kB high:40kB active:0kB inactive:0kB present:16384kB pages_scanned:2 all_unreclaimable? yes lowmem_reserve[]: 0 4848 4848 Normal free:13412kB min:8892kB low:11112kB high:13336kB active:1584168kB inactive:2346492kB present:4964352kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA: 0*4kB 1*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 24kB Normal: 1*4kB 4*8kB 6*16kB 113*32kB 1*64kB 5*128kB 3*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 13412kB HighMem: empty Swap cache: add 10, delete 10, find 3/6, race 0+0 Free swap = 7036300kB Total swap = 7036304kB Out of Memory: Killed process 9308 (l804.exe). I also got similar messages running the same software after setting /proc/sys/vm/overcommit_memory as "2". Some machine details: Tyan Tiger i7525 (S2672) motherboard; 2 Intel Xeon 3.2 GHz CPUs (2MB cache each); 4GB of ECC RAM; Radeon X300 VGA card. This is running Ubuntu 5.10 (Breezy) for x8_64 systems, with a 2.6.12 kernel (Ubuntu linux-source-2.6.12-10.28) recompiled with small configuration differences from the default Ubuntu one (no K8 NUMA, processor family Intel EM64T, SMP support, CONFIG_SCHED_SMT, some unneeded hardware support suppressed, ...). Feel free to request any additional data which could be helpful (kernel configuration. hardware details, ...). Best regards and thanks in advance J Esteves -- +351 939838775 Skype:jmcerqueira http://del.icio.us/jmce --------------enigA4BBFBCDF22445C00D2586EB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFEBdOKesWiVDEbnjYRAowvAJ9WKxjPdZSZ+KX2d/b+1WHqQh86vwCeOAqH uBpQdcbEnjfRKX+3PJrgZnQ= =2yny -----END PGP SIGNATURE----- --------------enigA4BBFBCDF22445C00D2586EB--