From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758246AbXHYVUi (ORCPT ); Sat, 25 Aug 2007 17:20:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751374AbXHYVUc (ORCPT ); Sat, 25 Aug 2007 17:20:32 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:39434 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751015AbXHYVUb (ORCPT ); Sat, 25 Aug 2007 17:20:31 -0400 Subject: Re: [git pull request] scheduler updates From: Peter Zijlstra To: Ingo Molnar Cc: Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <20070825172319.GA2080@elte.hu> References: <20070824141215.GA24403@elte.hu> <20070824193758.GA6440@elte.hu> <20070825172319.GA2080@elte.hu> Content-Type: text/plain Date: Sat, 25 Aug 2007 23:20:22 +0200 Message-Id: <1188076822.5405.13.camel@lappy> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2007-08-25 at 19:23 +0200, Ingo Molnar wrote: > Peter and me tested this all day with various workloads and extreme-load > behavior has improved all over the place Adaptive granularity makes a large difference for me on my somewhat ancient laptop (1200 MHz). When browsing the interweb using firefox (or trying to) while doing a (non-niced) kbuild -j5 the difference in interactivity is significant. [ kbuild -j5 was quite unbearable on 2.6.22 - so CFS is a clear win in any case ] The reduced latency is clearly noticable in a much smoother scroll behaviour. Whereas both still present a usable browsing experience the clear reduction in latency spikes makes it much more pleasant.