Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753520AbXJWUER (ORCPT ); Tue, 23 Oct 2007 16:04:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751968AbXJWUEG (ORCPT ); Tue, 23 Oct 2007 16:04:06 -0400 Received: from rv-out-0910.google.com ([209.85.198.188]:41931 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752192AbXJWUED (ORCPT ); Tue, 23 Oct 2007 16:04:03 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=lAPvZsam18lRB+JFM0Ou7Gy5FgAlbH+7VMpaR4TMDEB5bM4+vxDVE0Brr5HAUgX7pvdOesb0i3k+h5V/BbAv6UHVeCa3gJAglTnNK6mMa/FqkZqjH1XUlwuqA+bekeW/IlicFFh9T8iPiEJ8XYf320QoGjgKYroqfZjQCzPbauI= Message-ID: <84144f020710231304h6cba8626na4ab4bec0acda7a0@mail.gmail.com> Date: Tue, 23 Oct 2007 23:04:03 +0300 From: "Pekka Enberg" To: "Christoph Lameter" Subject: Re: SLUB 0:1 SLAB (OOM during massive parallel kernel builds) Cc: "Alexey Dobriyan" , linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071023181615.GA10377@martell.zuzino.mipt.ru> X-Google-Sender-Auth: 80ca364ebe85cc53 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 911 Lines: 21 Hi, On Tue, 23 Oct 2007, Alexey Dobriyan wrote: > > With SLAB this workload never went to OOM killer. > > With SLUB and pretty much all debugging enabled, it finishes to the end > > (albeit slowly). > > With SLUB and no debugging, OOM killer kicks in. On 10/23/07, Christoph Lameter wrote: > Not sure what this is. Maybe the slowing SLUB solves the race. What kind of race are you thinking of? What I initially thought was that the problem is that SLUB messes up some other VM heuristics due to different object sizes, not holding on to empty slabs, and/or page allocator pass-through. I guess only object size is affected by debugging, though? - 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/