From owner-freebsd-net Sat Jan 8 13:23:44 2000 Delivered-To: freebsd-net@freebsd.org Received: from ind.alcatel.com (postal.xylan.com [208.8.0.248]) by hub.freebsd.org (Postfix) with ESMTP id 02DB314DC2 for ; Sat, 8 Jan 2000 13:23:42 -0800 (PST) (envelope-from wes@softweyr.com) Received: from mailhub.xylan.com (mailhub [198.206.181.70]) by ind.alcatel.com (8.9.3+Sun/8.9.1 (ind.alcatel.com 3.0 [OUT])) with SMTP id NAA02744; Sat, 8 Jan 2000 13:23:37 -0800 (PST) X-Origination-Site: Received: from omni.xylan.com by mailhub.xylan.com (SMI-8.6/SMI-SVR4 (mailhub 2.1 [HUB])) id NAA06766; Sat, 8 Jan 2000 13:23:36 -0800 Received: from softweyr.com ([204.68.178.39]) by omni.xylan.com (8.9.3+Sun/8.9.1 (Xylan engr [SPOOL])) with ESMTP id NAA28598; Sat, 8 Jan 2000 13:22:23 -0800 (PST) Message-ID: <3877AB9F.E132C12C@softweyr.com> Date: Sat, 08 Jan 2000 14:26:55 -0700 From: Wes Peters Organization: Softweyr LLC X-Mailer: Mozilla 4.7 [en] (X11; U; FreeBSD 3.3-RELEASE i386) X-Accept-Language: en MIME-Version: 1.0 To: Mohit Aron Cc: freebsd-net@freebsd.org Subject: Re: performance of FreeBSD-current as SMP References: <200001081602.KAA11960@cs.rice.edu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Mohit Aron wrote: > > > > > An OS cannot make use of two or more prozessors, if you only use one > > process and/or one thread for all stuff. > > > > You should at least create a new thread for every answer. > > > > Good Lord! This is the second time now. I even SAID in my last two mails that > there is only ONE processor. Theortically then, FreeBSD configured with/without > SMP support shouldn't make any difference. Not if defining SMP support causes the kernel to compile in all of the lock acquisition and release code. Even if it simply does "if (ncpus < 2) return" it would still impact performance somewhat. -- "Where am I, and what am I doing in this handbasket?" Wes Peters Softweyr LLC wes@softweyr.com http://softweyr.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message