From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932375AbXCEUvo (ORCPT ); Mon, 5 Mar 2007 15:51:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932382AbXCEUvo (ORCPT ); Mon, 5 Mar 2007 15:51:44 -0500 Received: from waste.org ([66.93.16.53]:48441 "EHLO waste.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932375AbXCEUvn (ORCPT ); Mon, 5 Mar 2007 15:51:43 -0500 Date: Mon, 5 Mar 2007 14:38:57 -0600 From: Matt Mackall To: Con Kolivas Cc: linux kernel mailing list , ck list Subject: Re: [PATCH] [RSDL 5/6] sched: implement rsdl cpu scheduler Message-ID: <20070305203857.GQ16722@waste.org> References: <200703041806.22965.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200703041806.22965.kernel@kolivas.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 04, 2007 at 06:06:22PM +1100, Con Kolivas wrote: > + * This is the time all tasks within the same priority round robin. > + * Set to a minimum of 6ms. > */ > +#define RR_INTERVAL ((6 * HZ / 1001) + 1) What happens with small HZ? Like 100? I suppose 10ms is a reasonable number here. But in general, how well does this scheduler do without a time source other than jiffies? -- Mathematics is the supreme nostalgia of our time.