From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266740AbUGLHbL (ORCPT ); Mon, 12 Jul 2004 03:31:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266746AbUGLHbL (ORCPT ); Mon, 12 Jul 2004 03:31:11 -0400 Received: from [193.178.151.93] ([193.178.151.93]:5594 "EHLO as.unibanka.lv") by vger.kernel.org with ESMTP id S266740AbUGLHbG (ORCPT ); Mon, 12 Jul 2004 03:31:06 -0400 From: Aivils Reply-To: aivils@unibanka.lv Organization: Unibanka To: Ingo Molnar Subject: Voluntary Preemption + concurent games Date: Mon, 12 Jul 2004 11:23:11 +0300 User-Agent: KMail/1.6.1 References: <20040709182638.GA11310@elte.hu> <20040711143853.GA6555@elte.hu> <20040711201753.GA11073@elte.hu> In-Reply-To: <20040711201753.GA11073@elte.hu> Cc: ck kernel mailing list , linux-kernel@vger.kernel.org, linuxconsole-dev@lists.sourceforge.net MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200407121123.11520.aivils@unibanka.lv> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi All! I still use in my home minicomputer under Linux, where 3 users use one CPU/RAM , but own video. By default 2.6.XX task scheduler don' t like concurent applications at all. 2.6.XX task scheduler allways raise on top of tasks only one task and keep it on top until user stop it. This rule is very unwanted for minicomputers, because multile local users will use one CPU and feel lucky. As point of reference i use 2.4.XX tack scheduler, which is very "righteous" and allways give CPU time for all tasks. Under 2.4.XX concurent games run smooth. 2.6.XX non-preemptive and 2.6.XX voluntary-preemptive task scheduling looks very similar. My gamer' s eye report me very thiny and very subjective difference - preferable is voluntary-preemtive. Anyway all concurent CPU intensive tasks should be started with nice -n +19 game-bin . Any other nice value remake one of running game to slide show or both running games became slide show. So we should start any game with nice +19. In is this set goes in netscape and konqueror because of java web-chat and games. At least voluntary-preemptive allow me move away from 2.4.26 Aivils Stoss