From owner-freebsd-questions@FreeBSD.ORG Mon May 30 21:03:19 2011 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1EF4E1065672 for ; Mon, 30 May 2011 21:03:19 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id A675E8FC08 for ; Mon, 30 May 2011 21:03:18 +0000 (UTC) Received: by fxm11 with SMTP id 11so3800068fxm.13 for ; Mon, 30 May 2011 14:03:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=L0QZgbl7lFSQkcwpHAkU4/u5WoX7NUzIBjwLWJ+oR1o=; b=W5wqBkyuhOQcPmxwfZEihR80NYdkQ9MQIe0/CnIBR0HrzvUgYjv1/EpVVuKTQb0Sdd WxDi3+aCnHpC6/sw7CJaF8BhNaRuIl5OSyi0iCQpclR0qXhLT57b80uXRIUwr3IMsA4g daW3+6FQBGRTCHjiHMCNB2y9ygCWlm8YwRfzo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=ST4xFUTdXvJNoXtyqIP3Q5BGIiZJRmuMHhJGUp0yEWMOmQFhpmr8sMQioZ+oqfRNr9 yhZZmE5Q0UmT1M5hb74QaOLFCu/iMXrYLjZ9hnT06+oLdcl69ZFyB215FhisvjfR5tO8 dalnbpOfwXzNYXggBfIRIAipN1rMJ4n8c85Oo= MIME-Version: 1.0 Received: by 10.223.13.10 with SMTP id z10mr502004faz.69.1306787730352; Mon, 30 May 2011 13:35:30 -0700 (PDT) Received: by 10.223.118.148 with HTTP; Mon, 30 May 2011 13:35:30 -0700 (PDT) In-Reply-To: References: Date: Mon, 30 May 2011 15:35:30 -0500 Message-ID: From: Adam Vande More To: Warren Block Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: questions@freebsd.org Subject: Re: I486_CPU or I586_CPU in kernel config 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: Mon, 30 May 2011 21:03:19 -0000 On Mon, May 30, 2011 at 9:50 AM, Warren Block wrote: > Some time back, there was a post on one of the mailing lists that suggested > it was better to leave either I486_CPU or I586_CPU enabled in a kernel > config even for much newer processors. For performance reasons, AFAIR. > Naturally I didn't save that post or a link to it. > > Can anyone find that message, or explain why it would be good to keep > either of those cpu options in a kernel that will only run on much newer > CPUs? > Um, I don't recall seeing that and have removed them automatically for a long time. Here is one that suggests keeping I586_CPU with results that seem less than conclusive. http://lists.freebsd.org/pipermail/freebsd-stable/2005-December/020702.html -- Adam Vande More