From owner-freebsd-current@FreeBSD.ORG Thu Apr 29 14:53:41 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CF378106566C for ; Thu, 29 Apr 2010 14:53:41 +0000 (UTC) (envelope-from roberto@keltia.freenix.fr) Received: from keltia.net (unknown [IPv6:2a01:240:fe5c::41]) by mx1.freebsd.org (Postfix) with ESMTP id 865478FC0A for ; Thu, 29 Apr 2010 14:53:41 +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 5BE757121 for ; Thu, 29 Apr 2010 16:53:39 +0200 (CEST) Date: Thu, 29 Apr 2010 16:53:35 +0200 From: Ollivier Robert To: freebsd-current@freebsd.org Message-ID: <20100429145334.GB62822@roberto-al.eurocontrol.fr> References: <4BD8F7FA.2080103@jrv.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4BD8F7FA.2080103@jrv.org> 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); Thu, 29 Apr 2010 16:53:39 +0200 (CEST) Subject: Re: kmem_map too small: 3832475648 total allocated X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Thu, 29 Apr 2010 14:53:41 -0000 According to James R. Van Artsdalen: > system is a Core i7 975 (3.33 GHz x 4 cores 3x threads per core) with 12 > GB of RAM, a 2x2TB ZFS boot pool and a second (idle) pool of 16x2TB. > panic: kmem_malloc(131072): kmem_map too small: 3832475648 total allocated Apart from the fact that you must at least set vm.kmem_size to something like 2x your RAM, one rule of thumb I've seen discussed for ZFS is that you will need approximatively 1 GB of RAM per TB of data so you may be a bit short here to get optimal perfs. -- Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr In memoriam to Ondine : http://ondine.keltia.net/