From owner-freebsd-stable@FreeBSD.ORG Fri Nov 5 16:38:13 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7C54E1065697 for ; Fri, 5 Nov 2010 16:38:13 +0000 (UTC) (envelope-from thomas.e.zander@googlemail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id 38BD98FC14 for ; Fri, 5 Nov 2010 16:38:12 +0000 (UTC) Received: by qwg8 with SMTP id 8so2619506qwg.13 for ; Fri, 05 Nov 2010 09:38:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=st2rlfUkUQ4Qh4EB/W58ZyTwaV6qFMNATVmbUdMovaE=; b=ph2cI4tr61F5a+j5vR+KFIz/GuvLNNWC/ZYOQLCnp46fxHVlY5I80GMpFhjzT3WOpK hFxt5sKUEGXqekV6gq9xMPaWEC9B4irkKOlyH7VF6Vgu1IiD4SGakp6YXFDLzkLuHhZv pApcsfujuztm1MllAxDXvS6vW6VIR5rQb+Wn0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=ctiW8UBBDBGBlNZGj6tjJWFgERpkwMUbiwN4HSRUS2LnAVqLRE/Pj7p0cAY36Wd8Ru ClNSGYGWVwTE5RtirzUW7hN+BNFfCnm76uO5XNpSAcWnyNyq+4M2X0A1YC1ZcXf0xoK5 mprJo8E87W2QgbFmZF//dt+GVsigimDsdzO1Q= MIME-Version: 1.0 Received: by 10.224.20.70 with SMTP id e6mr1038847qab.356.1288973354736; Fri, 05 Nov 2010 09:09:14 -0700 (PDT) Received: by 10.229.249.135 with HTTP; Fri, 5 Nov 2010 09:09:14 -0700 (PDT) Date: Fri, 5 Nov 2010 17:09:14 +0100 Message-ID: From: Thomas Zander To: freebsd-stable Content-Type: text/plain; charset=ISO-8859-1 Subject: How to tell whether ECC (memory) is enabled? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Nov 2010 16:38:13 -0000 Dear, is there any way to inspect a running STABLE machine for the presence or state of ECC memory before an MCA "error detected" message actually occurs? In comparison when I quickly boot the machine in question with a Linux live CD, I find (among other EDAC messages) the following output in its dmesg: ... EDAC amd64: ECC is enabled by BIOS, Proceeding with EDAC module initialization ... During POST, die BIOS also tells me that ECC memory is installed, so far so good. But I was a little surprised that the FreeBSD kernel tells me absolutely nothing about it. Or do I have to tune loader.conf variables? TIA, Riggs