From owner-freebsd-stable@FreeBSD.ORG Mon Jan 11 17:30:26 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 F1190106566C; Mon, 11 Jan 2010 17:30:26 +0000 (UTC) (envelope-from petefrench@ticketswitch.com) Received: from constantine.ticketswitch.com (unknown [IPv6:2002:57e0:1d4e:1::3]) by mx1.freebsd.org (Postfix) with ESMTP id B861B8FC16; Mon, 11 Jan 2010 17:30:26 +0000 (UTC) Received: from dilbert.rattatosk ([10.64.50.6] helo=dilbert.ticketswitch.com) by constantine.ticketswitch.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69 (FreeBSD)) (envelope-from ) id 1NUO5m-0004JW-Vd; Mon, 11 Jan 2010 17:30:14 +0000 Received: from petefrench by dilbert.ticketswitch.com with local (Exim 4.71 (FreeBSD)) (envelope-from ) id 1NUO5m-0001aK-Uk; Mon, 11 Jan 2010 17:30:14 +0000 Date: Mon, 11 Jan 2010 17:30:14 +0000 Message-Id: To: dan.naumov@gmail.com, freebsd-fs@freebsd.org, freebsd-stable@freebsd.org In-Reply-To: From: Pete French Cc: Subject: Re: ZFS on top of GELI 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: Mon, 11 Jan 2010 17:30:27 -0000 > GELI+ZFS and Debian Linux with MDRAID and cryptofs. Has anyone here > made any benchmarks regarding how much of a performance hit is caused > by using 2 geli devices as vdevs for a ZFS mirror pool in FreeBSD (a I havent done it directly on the same boxes, but I have two systems with idenitical drives, each with a ZFS mirror pool, one wth GELI, and one without. Simple read test shows no overhead in using GELI at all. I would recommend using the new AHCI driver though - greatly improves throughput. -pete.