Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 30 Dec 2001 15:16:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 30 Dec 2001 15:16:14 -0500 Received: from mail.xmailserver.org ([208.129.208.52]:17932 "EHLO mail.xmailserver.org") by vger.kernel.org with ESMTP id ; Sun, 30 Dec 2001 15:15:59 -0500 Date: Sun, 30 Dec 2001 12:16:50 -0800 (PST) From: Davide Libenzi X-X-Sender: davide@blue1.dev.mcafeelabs.com To: Timothy Covell cc: Stephan von Krawczynski , Dieter =?iso-8859-1?q?N=FCtzel?= , Robert Love , Linux Kernel List Subject: Re: [PATCH] Balanced Multi Queue Scheduler ... In-Reply-To: <200112301951.fBUJoxSr011753@svr3.applink.net> Message-ID: 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 Sun, 30 Dec 2001, Timothy Covell wrote: > each CPU? And this reminds me of how "make -j3 bzlilo" is slower than > "make -j2 bzlilo". Running N CPU bound tasks on an M way SMP machine with N > M is never going to improve your performace. On the contrary, expecially with the current scheduler that keeps rotating the three tasks between the two CPUs, you're going to suffer a slight performance degradation. - Davide - 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/