From owner-freebsd-performance@FreeBSD.ORG Wed Apr 30 06:06:00 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 84EE737B401 for ; Wed, 30 Apr 2003 06:06:00 -0700 (PDT) Received: from smtp-relay2.barrysworld.com (smtp-relay2.barrysworld.com [213.221.172.236]) by mx1.FreeBSD.org (Postfix) with ESMTP id 723B943FE5 for ; Wed, 30 Apr 2003 06:05:59 -0700 (PDT) (envelope-from killing@barrysworld.com) Received: from [213.221.181.50] (helo=barrysworld.com) by smtp-relay2.barrysworld.com with esmtp (Exim 4.12) id 19ArGw-00072P-00; Wed, 30 Apr 2003 14:05:18 +0100 Received: from vader [212.135.219.179] by barrysworld.com with ESMTP (SMTPD32-7.15) id AAB0145E026C; Wed, 30 Apr 2003 14:08:00 +0100 Message-ID: <017101c30f19$2414fc60$b3db87d4@vader> From: "Steven Hartland" To: "Eric Anderson" , "agent dero" References: <3045.172.178.229.216.1051706735.squirrel@bluhayz.homeunix.org> <3EAFC81D.4070808@centtech.com> Date: Wed, 30 Apr 2003 14:05:14 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 cc: freebsd-performance@freebsd.org Subject: Re: FBSD 5 & SMP X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Steven Hartland List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Apr 2003 13:06:01 -0000 Im not sure it depends on the machine and the apps being run. We have been running 5.0-RELEASE on all or production machines after we did a soke test and found no issues at all in our environment. What would be interesting to know though is if 4.8 + Hyperthreading + SMP out performed 5.0 SMP as it doesn't have Hyperthreading support. Any one know if 5.0 has Hyperthreading in CURRENT? Steve ----- Original Message ----- From: "Eric Anderson" To: "agent dero" Cc: Sent: Wednesday, April 30, 2003 1:57 PM Subject: Re: FBSD 5 & SMP > agent dero wrote: > > I was reading the FBSD 5.0 release notes, and how the new version has > > better support for multiple processors. I haven't been able to find any a > > 4.x-STABLE SMP support docs. Does this mean that 4.7, my current release, > > doesn't support the multiple processors well. I am rebuilding my small > > business' server, and trying to decide if a dual processor will be the > > better way to go, but not sure if the advantages are going to be huge with > > the. I read the previous message about WITH_THREADS as a ports option, but > > the ports maximizing the dual CPUs isn't my greatest, I need the kernel > > itself to maximize the CPUs. Is this possible under any of the stable > > releases, before 5.0 ?? > > Yes, FreeBSD versions prior to 5.0 have SMP support, however 5.0's > support is more "finely tuned" and will give you better results. > However, since this sounds like a production server, you may want to > stick with 4.8-RELEASE, and built a new kernel with SMP support. > Depending on what you are using the machine for, you may or may not see > a performance benefit of a dual processor machine. > > What's the machine's primary function? > > Eric > > > -- > ------------------------------------------------------------------ > Eric Anderson Systems Administrator Centaur Technology > Attitudes are contagious, is yours worth catching? > ------------------------------------------------------------------ > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org" >