From owner-freebsd-questions@FreeBSD.ORG Sat Mar 26 19:49:11 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 875C016A4CF for ; Sat, 26 Mar 2005 19:49:11 +0000 (GMT) Received: from makeworld.com (makeworld.com [216.201.118.142]) by mx1.FreeBSD.org (Postfix) with ESMTP id E283E43D3F for ; Sat, 26 Mar 2005 19:49:10 +0000 (GMT) (envelope-from racerx@makeworld.com) Received: from localhost (localhost.com [127.0.0.1]) by makeworld.com (Postfix) with ESMTP id 17A8460E2; Sat, 26 Mar 2005 13:49:10 -0600 (CST) Received: from makeworld.com ([127.0.0.1]) by localhost (makeworld.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 84131-04; Sat, 26 Mar 2005 13:49:06 -0600 (CST) Received: from [216.201.118.138] (racerx.makeworld.com [216.201.118.138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by makeworld.com (Postfix) with ESMTP id 2049A60DB; Sat, 26 Mar 2005 13:49:04 -0600 (CST) Message-ID: <4245BCE1.6000201@makeworld.com> Date: Sat, 26 Mar 2005 13:49:53 -0600 From: Chris User-Agent: Mozilla Thunderbird 1.0 (X11/20050313) X-Accept-Language: en-us, en MIME-Version: 1.0 To: em1897@aol.com References: <1641928994.20050326192811@wanadoo.fr> <8C700529A2DFD74-A44-3A157@mblk-d34.sysops.aol.com> In-Reply-To: <8C700529A2DFD74-A44-3A157@mblk-d34.sysops.aol.com> X-Enigmail-Version: 0.90.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: by ClamAV 0.75.1/amavisd-new-2.2.1 (20041222) at makeworld.com - Isn't it ironic cc: freebsd-questions@freebsd.org Subject: Re: hyper threading. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: racerx@makeworld.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Mar 2005 19:49:11 -0000 em1897@aol.com wrote: > This is the kind of disinformation I have been > referring to.... > > You'll get much better performance with 1 processor in > UP mode. I suggest you do some testing. > > -----Original Message----- > From: Anthony Atkielski > To: freebsd-questions@freebsd.org > Sent: Sat, 26 Mar 2005 19:28:11 +0100 > Subject: Re: hyper threading. > > Perttu Laine writes: > >> I have 3,4ghz ht processor and freebsd shows up only one processors. I >> suppose it should show two in ht models? so, GENERIC kernel doesn't >> support it? but should I add to kernel config to enable it? by reading >> config examples I think this should be enough: >> >> options SMP > > > Yes, that's all you need. Just add that line, rebuild and reinstall the > kernel, and you're all set. Works great. Hyperthreading doesn't buy > you as much as truly separate processors, but it helps you get more bang > for the buck out of your single processor (depending on the type of > workload you run). > If you feel someone is in error - feel free to jump in and offer what you feel to be correct information. Sometimes sitting back and not correcting someone is far worse then someone offering information based on what they know, experience, or what have you. In this case, by NOT offering the correct information, YOU are just as much to blame for what you say is going on. For those of us that don't answer, we either don't know (as is the case wit myself) OR, they have not had a chance to read the thread. -- Best regards, Chris It is a simple task to make things complex, but a complex task to make them simple.