From owner-freebsd-amd64@FreeBSD.ORG Sun Feb 1 15:52:11 2004 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D6BD016A4CE for ; Sun, 1 Feb 2004 15:52:11 -0800 (PST) Received: from natrium.plan-ix.de (natrium.plan-ix.de [212.37.39.36]) by mx1.FreeBSD.org (Postfix) with SMTP id AEE6243D53 for ; Sun, 1 Feb 2004 15:51:40 -0800 (PST) (envelope-from braukmann@tse-online.de) Received: (qmail 29475 invoked from network); 1 Feb 2004 23:51:34 -0000 Received: from p50824382.dip0.t-ipconnect.de (HELO ?192.168.225.100?) (braukmann%tse-online.de@80.130.67.130) by natrium.plan-ix.de with SMTP; 1 Feb 2004 23:51:34 -0000 Date: Mon, 02 Feb 2004 00:51:34 +0100 From: Andreas Braukmann To: "Haapanen, Tom" Message-ID: <1071900000.1075679494@cage.int.unixxinu.de> In-Reply-To: References: X-Mailer: Mulberry/3.1.0 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline cc: amd64@freebsd.org Subject: RE: Dual processor, AMD 64 machine freezing. X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Feb 2004 23:52:12 -0000 On 02/01/04 18:34:10 -0500 Haapanen, Tom wrote: > I run a K8S Pro with dual 244s (couldn't find any 246s and the 248s were > just too dear for me) and 2 GB ... and I started off with an Adaptec 2100S > RAID, but had consistent panics when booting. Apparently the aac driver > isn't exactly 64-bit clean. The 2100S isn't driven by aac(4) but by asr(4). The asr-driver is in fact not 64-bit clean (as Scott Long stated multiple times :-/). The aac-driver is perfectly fine with the 64 bits (for me). It survives heavy i/o load without a hitch. I ran quite a bunch of tests (parallel bonnie++ spreaded over multiple raid volumes and multiple file systems, postmark, etc.) with my 2200S, 2120S and 5400S. > P.S. For best performance, I think you really want to run 4x 512 MB. > Running with two DIMMs means either you only get 64-bit memory access (not > 128-bit) or else you need to put both DIMMs into the CPU1 memory slots > (which means CPU2 will have to access those through hypertransport). Thats theory. ;-) Since the allocators don't know about the numa-like architecture memory would be accessed through hyptertransport (statistically) more or less "half of the time". (CPU0 ---> HT ---> MEM1 ; CPU1 ---> HT ---> MEM0) -Andreas