From owner-freebsd-current@FreeBSD.ORG Mon Mar 18 11:54:59 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 1EBD9D2 for ; Mon, 18 Mar 2013 11:54:59 +0000 (UTC) (envelope-from phk@phk.freebsd.dk) Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222]) by mx1.freebsd.org (Postfix) with ESMTP id C06893DE for ; Mon, 18 Mar 2013 11:54:58 +0000 (UTC) Received: from critter.freebsd.dk (critter.freebsd.dk [192.168.61.3]) by phk.freebsd.dk (Postfix) with ESMTP id 05EDA8A521; Mon, 18 Mar 2013 11:54:51 +0000 (UTC) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.14.6/8.14.6) with ESMTP id r2IBsp6t035879; Mon, 18 Mar 2013 11:54:51 GMT (envelope-from phk@phk.freebsd.dk) To: Tom Evans Subject: Re: FreeBSD is very slow when Memory chip sizes are imbalanced in slots In-reply-to: From: "Poul-Henning Kamp" References: Content-Type: text/plain; charset=ISO-8859-1> Date: Mon, 18 Mar 2013 11:54:51 +0000 Message-ID: <35878.1363607691@critter.freebsd.dk> Cc: freebsd-current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2013 11:54:59 -0000 In message , Tom Evans writes: >You say this, have you actually measured/checked. sysutils/dmidecode >will interrogate your BIOS and tell us what it thinks is installed in >each RAM socket. It is not uncommon for RAM to say one thing on the >outside, and report something completely different to the BIOS. I can only second Tom's call for a proper scientific approach to debugging this issue, rather than just assume that it is the operating systems fault. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.