From owner-freebsd-questions@FreeBSD.ORG Tue Feb 23 12:21:34 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 E32FE1065672 for ; Tue, 23 Feb 2010 12:21:34 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-fx0-f223.google.com (mail-fx0-f223.google.com [209.85.220.223]) by mx1.freebsd.org (Postfix) with ESMTP id 700E78FC18 for ; Tue, 23 Feb 2010 12:21:34 +0000 (UTC) Received: by fxm23 with SMTP id 23so3652730fxm.3 for ; Tue, 23 Feb 2010 04:21:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:subject :message-id:in-reply-to:references:x-mailer:mime-version :content-type:content-transfer-encoding; bh=wm2UN3K1J2lY3zzR3HJ9sCka4zWyblVXTGDjAJtIz8I=; b=qn+uPM2qDGjzi3nQHE3MgrPgwp5epqdvdLaJdrVY9oBZeZMIrUItiO1ahnBn27QH5l 5OvIJIQBdTtR/28UmL/adnU8sHQZHw/XOSPgmu9dZTJlYlk8RS/AvG5SSTmXvd4tueeA vsu64DZBS+jAht5wAAH5ufTShLWMc/s+4zHhY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=date:from:to:subject:message-id:in-reply-to:references:x-mailer :mime-version:content-type:content-transfer-encoding; b=h1W84dLxgab4Rgc8zDT7mx1r55WKTPrxqMDEI8QeWdeb7LPWMJLB4YdnBty8w+U5Zw rMxfKM6BnR1FIOEjbmPPkpuBS9sFmzASFD+j6C3Vdrdk+W72RfRLzieIbJjVcltr9i6p n5k3VmOwN3j/+dcVFtPyxRIx4hK6qulkdugFE= Received: by 10.223.5.75 with SMTP id 11mr2210967fau.46.1266927690300; Tue, 23 Feb 2010 04:21:30 -0800 (PST) Received: from gumby.homeunix.com (bb-87-81-140-128.ukonline.co.uk [87.81.140.128]) by mx.google.com with ESMTPS id 21sm7157357fks.53.2010.02.23.04.21.27 (version=SSLv3 cipher=RC4-MD5); Tue, 23 Feb 2010 04:21:28 -0800 (PST) Date: Tue, 23 Feb 2010 12:21:25 +0000 From: RW To: freebsd-questions@freebsd.org Message-ID: <20100223122125.1b03f0ec@gumby.homeunix.com> In-Reply-To: References: X-Mailer: Claws Mail 3.7.5 (GTK+ 2.18.7; i386-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: Using "march=native" in "/etc/make.conf" 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: Tue, 23 Feb 2010 12:21:35 -0000 On Tue, 23 Feb 2010 06:41:04 -0500 Carmel wrote: > I just acquired an older Gateway GT5220 with an AMD 62 Athlon-x2 > dual processor. I want to set it up as a sort of test machine. There > does not seem to be a specific setting for 'cpu-type' or 'march' for > this machine. I have notices on some Linux forums that they recommend > using the 'native' keyword; i.e., "march=native" in the 'make.conf' > file to get the most optimization out of the CPU. Would that be > correct for FreeBSD also? Would it also be appropriate for other CPUs > as well? FreeBSD sets "march" and other default settings based on CPUTYPE. It's probably better to set that.