Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932567AbWAKBOb (ORCPT ); Tue, 10 Jan 2006 20:14:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932579AbWAKBOa (ORCPT ); Tue, 10 Jan 2006 20:14:30 -0500 Received: from smtp-out.google.com ([216.239.45.12]:14459 "EHLO smtp-out.google.com") by vger.kernel.org with ESMTP id S932567AbWAKBOa (ORCPT ); Tue, 10 Jan 2006 20:14:30 -0500 Message-ID: <43C45BDC.1050402@google.com> Date: Tue, 10 Jan 2006 17:14:04 -0800 From: Martin Bligh User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051011) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel , Andrew Morton Subject: -mm seems significanty slower than mainline on kernbench 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 Content-Length: 1356 Lines: 37 OK, I fixed the graphs so you can actually read them now ;-) http://test.kernel.org/perf/kernbench.elm3b6.png (x86_64 4x) http://test.kernel.org/perf/kernbench.moe.png (NUMA-Q) http://test.kernel.org/perf/kernbench.elm3b132.png (4x SMP ia32) Both seems significantly slower on -mm (mm is green line) If I look at diffprofile between 2.6.15 and 2.6.15-mm1, it just looks like we have lots more idle time. You got strange scheduler changes in there, that you've been carrying for a long time (2.6.14-mm1 at least)? or HZ piddling? See to be mainly getting much more idle time. Diffprofile: 1278 39.6% default_idle 1261 10.1% total 243 1518.8% find_get_page 220 0.0% copy_user_generic 100 357.1% free_hot_cold_page ... -106 -93.0% __pagevec_free -125 -100.0% __free_pages_ok -239 -100.0% copy_user_generic_c -242 -100.0% find_trylock_page Original profiles: http://test.kernel.org/19657/002.kernbench.test/profiling/profile.text (2.6.15) http://test.kernel.org/19794/002.kernbench.test/profiling/profile.text (2.6.15-mm1) - 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/