From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936445AbZAPO2r (ORCPT ); Fri, 16 Jan 2009 09:28:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S936402AbZAPO2B (ORCPT ); Fri, 16 Jan 2009 09:28:01 -0500 Received: from mail.gmx.net ([213.165.64.20]:52131 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S936397AbZAPO2A (ORCPT ); Fri, 16 Jan 2009 09:28:00 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX18Dz1tMpWoDL/mGbgSgOHqEm+O1A77FIE36sx/W6c BONgUgre8fn9ff Subject: Re: [PATCH 0/2] prefer wakers -v2 From: Mike Galbraith To: Peter Zijlstra Cc: Ingo Molnar , Linux Kernel Mailing List In-Reply-To: <20090114113917.199690328@chello.nl> References: <20090114113917.199690328@chello.nl> Content-Type: text/plain Date: Fri, 16 Jan 2009 15:27:55 +0100 Message-Id: <1232116075.6141.29.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.67 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2009-01-14 at 12:39 +0100, Peter Zijlstra wrote: > OK, so lets try this again... I took tip out for a little test-drive. Mysql/pgsql+oltp showed no effect vs 29.git beyond noise level, but cache hot make -j8 kbuild times in an nfs4 mount show marked improvement. 2.6.29.git real 6m29.291s user 10m20.355s sys 2m1.288s 2.6.29.tip real 4m30.160s user 10m26.115s sys 2m3.088s Wire saturates at ~4m, so there's still some room for improvement. On the interactivity front, tip feels snappier, particularly when IO is going on. One place that this is quite noticeable is reading lkml with evolution while building a new kernel. I generally keep thread count low when using evolution because IO makes it sluggish when deleting and moving on to the next message. With tip, the evolution experience is much improved. -Mike