From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 10 Dec 2001 12:00:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 10 Dec 2001 12:00:38 -0500 Received: from colorfullife.com ([216.156.138.34]:52751 "EHLO colorfullife.com") by vger.kernel.org with ESMTP id ; Mon, 10 Dec 2001 12:00:27 -0500 Message-ID: <3C14EA26.5060306@colorfullife.com> Date: Mon, 10 Dec 2001 18:00:22 +0100 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.5) Gecko/20011012 X-Accept-Language: en-us MIME-Version: 1.0 To: Jack Steiner CC: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net Subject: Re: [Lse-tech] [RFC] [PATCH] Scalable Statistics Counters In-Reply-To: <200112101633.KAA45958@fsgi055.americas.sgi.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jack Steiner wrote: > >BTW, I think Tony Luck (at Intel) is currently changing the slab allocator >to be numa-aware. Are coordinating your work with his??? > Thanks, I wasn't aware that he's working on it. I haven't started coding, I'm still collecting what's needed. * force certain alignments. e.g. ARM needs 1024 byte aligned objects for the page tables. * NUMA support. * Add a "priority" to kmem_cache_shrink, to avoid that every dcache/icache shrink causes an IPI to all cpus. * If possible: replace the division in kmem_cache_free_one with the multiplication by the reciprocal. (I have a patch, but it's too ugly for inclusion). Important for uniprocessor versions. * add reservation support - e.g. there must be a minimum amount of bio structures available, otherwise the kernel could oom-deadlock. They must be available, not hidden in the per-cpu caches of the other cpus. -- Manfred