From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261372AbUL2Qd5 (ORCPT ); Wed, 29 Dec 2004 11:33:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261305AbUL2Qd5 (ORCPT ); Wed, 29 Dec 2004 11:33:57 -0500 Received: from dbl.q-ag.de ([213.172.117.3]:14981 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id S261372AbUL2Qdx (ORCPT ); Wed, 29 Dec 2004 11:33:53 -0500 Message-ID: <41D2DC68.5080805@colorfullife.com> Date: Wed, 29 Dec 2004 17:33:44 +0100 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.3) Gecko/20041020 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ravikiran G Thirumalai CC: Linux Kernel Mailing List Subject: Re: [RFC] Reimplementation of linux dynamic percpu memory allocator References: <41C35DD6.1050804@colorfullife.com> <20041220182057.GA16859@in.ibm.com> <41C718C7.1020908@colorfullife.com> <20041220192558.GA17194@in.ibm.com> In-Reply-To: <20041220192558.GA17194@in.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ravikiran G Thirumalai wrote: >On Mon, Dec 20, 2004 at 07:24:07PM +0100, Manfred Spraul wrote: > > >>No, not fast path. But it can happen a few thousand times. The slab >>implementation failed due to heavy internal fragmentation. If your code >>runs fine with a few thousand users, then there shouldn't be a problem. >> >> > > > Could you ask Badari Pulavarty (pbadari@us.ibm.com)? He noticed the fragmentation problem with the original kmem_cache_alloc_node implementation. Perhaps he could just run your version with his test setup: The thread with the fix is at: http://marc.theaimsgroup.com/?t=109735434400002&r=1&w=2 -- Manfred