From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758352AbXG1WXE (ORCPT ); Sat, 28 Jul 2007 18:23:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756724AbXG1WWz (ORCPT ); Sat, 28 Jul 2007 18:22:55 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:35643 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756511AbXG1WWy (ORCPT ); Sat, 28 Jul 2007 18:22:54 -0400 Date: Sat, 28 Jul 2007 15:22:31 -0700 (PDT) From: Linus Torvalds To: Jan Engelhardt cc: Kasper Sandberg , Linux Kernel Mailing List , Ingo Molnar , CK Mailinglist Subject: Re: Linus 2.6.23-rc1 In-Reply-To: Message-ID: References: <1185588279.1654.1.camel@localhost> <1185615848.13701.16.camel@localhost> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 28 Jul 2007, Jan Engelhardt wrote: > > I generally run with CONFIG_HZ=100, CONFIG_NO_HZ=n, CONFIG_PREEMPT_NONE. Ok, that's HZ=100 is likely the worst case, as it effectively multiples all the scheduler latencies by 10 (rather than by 4, which is what the default 250Hz does). That said, I think most testing showed that the CFS scheduler tunables didn't have a huge amount of impact on how things felt, so that factor-of-ten might not even matter that much. The 3D game issues may well be totally elsewhere. But it's certainly worth looking at. Linus