Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 18 Dec 2001 10:36:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 18 Dec 2001 10:36:26 -0500 Received: from m749-mp1-cvx1b.edi.ntl.com ([62.253.10.237]:19182 "EHLO pinkpanther.swansea.linux.org.uk") by vger.kernel.org with ESMTP id ; Tue, 18 Dec 2001 10:36:15 -0500 From: Alan Cox Message-Id: <200112181431.fBIEVW115600@pinkpanther.swansea.linux.org.uk> Subject: Re: Scheduler ( was: Just a second ) ... To: forveill@cfht.hawaii.edu (Thierry Forveille) Date: Tue, 18 Dec 2001 14:31:32 +0000 (GMT) Cc: linux-kernel@vger.kernel.org In-Reply-To: <15390.53230.827019.336771@hoku.cfht.hawaii.edu> from "Thierry Forveille" at Dec 17, 2001 07:11:10 X-Mailer: ELM [version 2.5 PL6] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I have a feeling that this discussion got sidetracked: cpu cycles burnt > in the scheduler indeed is non-issue, but big tasks being needlessly moved > around on SMPs is worth tackling.] Its not a non issue - 40% of an 8 way box is a lot of lost CPU. Fixing the CPU bounce around problem also matters a lot - Ingo's speedups seen just by improving that on the current scheduler show its worth the work - 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/