From owner-freebsd-smp@FreeBSD.ORG Sat Apr 1 16:27:59 2006 Return-Path: X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9693016A400 for ; Sat, 1 Apr 2006 16:27:59 +0000 (UTC) (envelope-from pete@he.iki.fi) Received: from silver.he.iki.fi (helenius.fi [193.64.42.241]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2EFE343D46 for ; Sat, 1 Apr 2006 16:27:58 +0000 (GMT) (envelope-from pete@he.iki.fi) Received: from [127.0.0.1] (dyn234.helenius.fi [193.64.42.234]) by silver.he.iki.fi (Postfix) with ESMTP id 2E3D3BC53; Sat, 1 Apr 2006 19:27:53 +0300 (EEST) Message-ID: <442EAA0A.8030704@he.iki.fi> Date: Sat, 01 Apr 2006 19:27:54 +0300 From: Petri Helenius User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Mark Kirkwood References: <009301c65418$cc029f30$65fd24c0@Eric> <64659004-E643-4044-AAED-076E0CC91977@foolishgames.com> <01a901c65493$77ad2740$65fd24c0@Eric> <442DC9B6.2090200@paradise.net.nz> In-Reply-To: <442DC9B6.2090200@paradise.net.nz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Eric , freebsd-smp@freebsd.org, Lucas Holt Subject: Re: Low perf with smp X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 01 Apr 2006 16:27:59 -0000 Mark Kirkwood wrote: > > As I understand it, when you activate SMP a more accurate, but slower > timecounter is chosen (typically 'i8254' instead of 'TSC' on intel HW). ACPI-fast should be the default with SMP. It's significantly faster than i8254 Pete