From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264511AbTLLI7d (ORCPT ); Fri, 12 Dec 2003 03:59:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264512AbTLLI7d (ORCPT ); Fri, 12 Dec 2003 03:59:33 -0500 Received: from mail-10.iinet.net.au ([203.59.3.42]:18100 "HELO mail.iinet.net.au") by vger.kernel.org with SMTP id S264511AbTLLI7c (ORCPT ); Fri, 12 Dec 2003 03:59:32 -0500 Message-ID: <3FD9836F.2050003@cyberone.com.au> Date: Fri, 12 Dec 2003 19:59:27 +1100 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030827 Debian/1.4-3 X-Accept-Language: en MIME-Version: 1.0 To: Rusty Russell CC: linux-kernel , Anton Blanchard , Ingo Molnar , "Martin J. Bligh" , "Nakajima, Jun" , Mark Wong Subject: Re: [CFT][RFC] HT scheduler References: <20031212052812.E016B2C072@lists.samba.org> <3FD9679A.1020404@cyberone.com.au> In-Reply-To: <3FD9679A.1020404@cyberone.com.au> 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 Nick Piggin wrote: > > w26 does ALL this, while sched.o is 3K smaller than Ingo's shared > runqueue > patch on NUMA and SMP, and 1K smaller on UP (although sched.c is 90 lines > longer). kernbench system time is down nearly 10% on the NUMAQ, so it > isn't > hurting performance either. Hackbench performance on the NUMAQ is improved by nearly 50% at large numbers of tasks due to a better scaling factor (which I think is slightly "more" linear too). It is also improved by nearly 25% (4.08 vs 3.15) on OSDLs 8 ways at small number of tasks, due to a better constant factor. http://www.kerneltrap.org/~npiggin/w26/hbench.png And yeah hackbench kills the NUMAQ after about 350 rooms. This is due to memory shortages. All the processes are getting stuck in shrink_caches, get_free_pages, etc.