From owner-freebsd-stable@FreeBSD.ORG Thu Dec 29 04:20:39 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 550F816A41F; Thu, 29 Dec 2005 04:20:39 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id 163A043D58; Thu, 29 Dec 2005 04:20:39 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id E5A2C1A3C1E; Wed, 28 Dec 2005 20:20:38 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by obsecurity.dyndns.org (Postfix) with ESMTP id 17A6A513A2; Wed, 28 Dec 2005 23:20:35 -0500 (EST) Message-ID: <43B363FE.60906@obsecurity.org> Date: Thu, 29 Dec 2005 14:50:14 +1030 From: Kris Kennaway User-Agent: Mozilla Thunderbird 1.0.7 (Macintosh/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Mike Jakubik References: <43B2F0A8.2030609@freebsd.org> <43B2F236.80903@rogers.com> In-Reply-To: <43B2F236.80903@rogers.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org, Mark Ovens Subject: Re: RELENG_6: Which scheduler for SMP? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Dec 2005 04:20:39 -0000 Mike Jakubik wrote: > Mark Ovens wrote: > >> I've never had any success with the ULE scheduler on my dual Athlon >> box running RELENG_5; it was so unstable it made Windows 3.1 look >> stable. In fact my current build, cvsup'd a couple of days ago, won't >> even boot with ULE. >> >> From what I remember, ULE was intended to become the default >> scheduler during the life of 5.0 but that hasn't happened. >> >> I've just cvsup'd the source for RELENG_6 and I'm surprised to find >> in the GENERIC config file: >> >> #options SCHED_ULE # ULE scheduler >> options SCHED_4BSD # 4BSD scheduler >> >> so it seems 4BSD is still the default scheduler. Is ULE _still_ >> considered to be in development/experimental? Even the SMP config >> file doesn't use ULE. > > > > There have been substantial improvements made to it since 5. However > no one will be able to tell you if its 100% ready, you will just have > to try it on your system. > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > ULE is about 10-20% slower than 4BSD except under minimal load, in my testing. Kris