Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932303AbWAUT5O (ORCPT ); Sat, 21 Jan 2006 14:57:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932305AbWAUT5O (ORCPT ); Sat, 21 Jan 2006 14:57:14 -0500 Received: from noname.neutralserver.com ([70.84.186.210]:39385 "EHLO noname.neutralserver.com") by vger.kernel.org with ESMTP id S932303AbWAUT5O (ORCPT ); Sat, 21 Jan 2006 14:57:14 -0500 Date: Sat, 21 Jan 2006 22:00:17 +0200 From: Dan Aloni To: Andrew Morton Cc: Dave Jones , AChittenden@bluearc.com, linux-kernel@vger.kernel.org, lwoodman@redhat.com, Jens Axboe Subject: Re: Out of Memory: Killed process 16498 (java). Message-ID: <20060121200016.GA32197@localdomain> References: <89E85E0168AD994693B574C80EDB9C270355601F@uk-email.terastack.bluearc.com> <20060119194836.GM21663@redhat.com> <20060119170305.2e8ae353.akpm@osdl.org> <20060120012844.GE3798@redhat.com> <20060119174920.4a842f03.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060119174920.4a842f03.akpm@osdl.org> User-Agent: Mutt/1.5.11 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - noname.neutralserver.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - monatomic.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1244 Lines: 29 On Thu, Jan 19, 2006 at 05:49:20PM -0800, Andrew Morton wrote: > Dave Jones wrote: > > > > The Fedora user in the bug report > > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175173 > > who on x86-64 with 5GB saw zone_dma exhausted saw a similar result, > > delays the kill, but it does still happen. > > Again, that person's ZONE_DMA has *zero* pages on the LRU. Something has > consumed all of the piddling little zone for kernel data structures. It is > a true oom. > > We need to work out who is using all this ZONE_DMA memory and make them > stop it. It reminds me, we had a similar problem in the 2.4.x kernel with many SCSI hosts loaded - that caused scsi_malloc (which uses DMA) to consume a lot of DMA memory and trigger the OOM. I know that code was much rewritten for 2.6.x, through DMA allocations in the SCSI subsystem (regardless of drivers) still exist here and there. -- Dan Aloni da-x@monatomic.org, da-x@colinux.org, da-x@gmx.net, dan@xiv.co.il - 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/