From owner-freebsd-stable@FreeBSD.ORG Tue Feb 15 15:09:23 2011 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 0B6F1106564A for ; Tue, 15 Feb 2011 15:09:23 +0000 (UTC) (envelope-from roberto@keltia.freenix.fr) Received: from keltia.net (centre.keltia.net [IPv6:2a01:240:fe5c::41]) by mx1.freebsd.org (Postfix) with ESMTP id A87938FC1D for ; Tue, 15 Feb 2011 15:09:22 +0000 (UTC) Received: from roberto-al.eurocontrol.fr (aran.keltia.net [88.191.250.24]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: roberto) by keltia.net (Postfix/TLS) with ESMTPSA id AA79EA939 for ; Tue, 15 Feb 2011 16:09:21 +0100 (CET) Date: Tue, 15 Feb 2011 16:09:19 +0100 From: Ollivier Robert To: freebsd-stable@freebsd.org Message-ID: <20110215150919.GC12068@roberto-al.eurocontrol.fr> References: <1297026074.23922.8.camel@ubuntu> <20110207045501.GA15568@icarus.home.lan> <1297065041.754.12.camel@ubuntu> <20110207085537.GA20545@icarus.home.lan> <6E948342-DEFF-4DEB-B0DC-990B647549EB@punkt.de> <16407D66-5303-4FF1-85D1-9372B4135C5A@punkt.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <16407D66-5303-4FF1-85D1-9372B4135C5A@punkt.de> X-Operating-System: MacOS X / Macbook Pro - FreeBSD 7.2 / Dell D820 SMP User-Agent: Mutt/1.5.20 (2009-06-14) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.3 (keltia.net); Tue, 15 Feb 2011 16:09:21 +0100 (CET) Subject: Re: 8.1 amd64 lockup (maybe zfs or disk related) 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: Tue, 15 Feb 2011 15:09:23 -0000 According to Patrick M. Hausen: > And with the very same settings on our bigger backup box I really need to > improve performance somehow. We are backing up >50 hosts nightly with > Amanda. I got from this post that I definitely should increase memory on > this machine: The rule of thumb I saw on the opensolaris lists back a year or two was that you need approx. one GB of RAM per TB of data. Now, if you have a high I/O rate, the more you have is better. -- Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.net In memoriam to Ondine, our 2nd child: http://ondine.keltia.net/