Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 23 Jan 2003 19:15:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 23 Jan 2003 19:15:18 -0500 Received: from franka.aracnet.com ([216.99.193.44]:64142 "EHLO franka.aracnet.com") by vger.kernel.org with ESMTP id ; Thu, 23 Jan 2003 19:15:17 -0500 Date: Thu, 23 Jan 2003 16:24:25 -0800 From: "Martin J. Bligh" To: Austin Gonyou , linux-kernel@vger.kernel.org Subject: Re: Using O(1) scheduler with 600 processes. Message-ID: <310350000.1043367864@titus> In-Reply-To: <1043367029.28748.130.camel@UberGeek> References: <1043367029.28748.130.camel@UberGeek> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I've heard some say that O(1) sched can only really help on systems with > lots and lots of processes. > > But my systems run about 600 processes max, but are P4 Xeons with HT, > and we kick off several hundred processes sometimes. (sleeping to > running then back) based on things happening in the system. > > I am possibly going to forgo putting O(1)sched in production *right now* > until I've got my patch solid. But I got to thinking, do I need it at > all on a Oracle VLDB? > > I think yes, but I wanted to get some opinions/facts before making that > choice to go without O(1) sched. How many *processors*? Real ones. M. - 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/