From owner-freebsd-questions@FreeBSD.ORG Wed Nov 10 10:42:33 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3AE9A106566B for ; Wed, 10 Nov 2010 10:42:33 +0000 (UTC) (envelope-from fidaj@ukr.net) Received: from fsm1.ukr.net (fsm1.ukr.net [195.214.192.23]) by mx1.freebsd.org (Postfix) with ESMTP id EF2018FC12 for ; Wed, 10 Nov 2010 10:42:32 +0000 (UTC) Received: from 84-73-132-95.pool.ukrtel.net ([95.132.73.84] helo=localhost) by fsm1.ukr.net with esmtps ID 1PG88M-0004k0-VK for freebsd-questions@freebsd.org; Wed, 10 Nov 2010 12:42:31 +0200 Date: Wed, 10 Nov 2010 12:42:25 +0200 From: Ivan Klymenko To: freebsd-questions@freebsd.org Message-ID: <20101110124225.587c4b95@ukr.net> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.20.1; amd64-portbld-freebsd9.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: kern.smp.topology X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Nov 2010 10:42:33 -0000 Hello! People. Who can explain the purpose of sysctl variable kern.smp.topology? What does it affect? It may take such values: 1 -Dual core with no sharing. 2 -No topology, all cpus are equal. 3 -Dual core with shared L2. 4 -quad core, shared l3 among each package, private l2. 5 -quad core, 2 dualcore parts on each package share l2. 6 -Single-core 2xHTT 7 -quad core with a shared l3, 8 threads sharing L2. default-Default, ask the system what it wants. Does it make sense to set its value manually, if I know that my CPU Core2Duo? How to do this, select a value? I not found this explanation in any of the official guides ... Thanks!