Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 23 Feb 2003 23:48:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 23 Feb 2003 23:48:30 -0500 Received: from bitmover.com ([192.132.92.2]:52928 "EHLO mail.bitmover.com") by vger.kernel.org with ESMTP id ; Sun, 23 Feb 2003 23:48:29 -0500 Date: Sun, 23 Feb 2003 20:57:17 -0800 From: Larry McVoy To: "Martin J. Bligh" Cc: Bill Davidsen , Ben Greear , Linux Kernel Mailing List Subject: Re: Minutes from Feb 21 LSE Call Message-ID: <20030224045717.GC4215@work.bitmover.com> Mail-Followup-To: Larry McVoy , "Martin J. Bligh" , Bill Davidsen , Ben Greear , Linux Kernel Mailing List References: <33350000.1046043468@[10.10.2.4]> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <33350000.1046043468@[10.10.2.4]> User-Agent: Mutt/1.4i X-MailScanner: Found to be clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1103 Lines: 23 On Sun, Feb 23, 2003 at 03:37:49PM -0800, Martin J. Bligh wrote: > >> For instance, don't locks simply get compiled away to nothing on > >> uni-processor machines? > > > > Preempt causes most of the issues of SMP with few of the benefits. There > > are loads for which it's ideal, but for general use it may not be the > > right feature, and I ran it during the time when it was just a patch, but > > lately I'm convinced it's for special occasions. > > Note that preemption was pushed by the embedded people Larry was advocating > for, not the big-machine crowd .... ironic, eh? Dig through the mail logs and you'll see that I was completely against the preemption patch. I think it is a bad idea, if you want real time, use rt/linux, it solves the problem right. -- --- Larry McVoy lm at bitmover.com http://www.bitmover.com/lm - 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/