From owner-freebsd-questions@FreeBSD.ORG Fri Nov 18 14:32:53 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A9CD9106564A for ; Fri, 18 Nov 2011 14:32:53 +0000 (UTC) (envelope-from jherman@dichotomia.fr) Received: from mail.dichotomia.fr (hydrogen.dichotomia.net [91.121.82.228]) by mx1.freebsd.org (Postfix) with ESMTP id ED3018FC12 for ; Fri, 18 Nov 2011 14:32:52 +0000 (UTC) Received: from [192.168.0.84] (unknown [178.208.2.9]) (Authenticated sender: kha) by mail.dichotomia.fr (Postfix) with ESMTPSA id D9B303DD069 for ; Fri, 18 Nov 2011 15:10:13 +0100 (CET) Message-ID: <4EC66850.2030008@dichotomia.fr> Date: Fri, 18 Nov 2011 15:14:40 +0100 From: Jerome Herman User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (mail.dichotomia.fr); Fri, 18 Nov 2011 15:10:13 +0100 (CET) Subject: Geom Gate usage and perf X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Nov 2011 14:32:53 -0000 Hello, Just wondering if anyone is using geom gate and could help me with huge perf issue I am having. Right now the set up is such : 3 drives on the same machine A, exported through geom gate and connected to machine B. On machine B I format the drives as freebsd-vinum and mount them in stripping+mirroring. The end goal is to have High Availability drives. The setup is working, but the perf are awfull. Thinking It was due to software stripping and mirroring slowing the process down I tried with only one drive with a standard UFS format. The perf are still horrible. When the drive is mounted locally on machine A and I copy data with rsync from machine B; I have a steady 12MB/s data transfer rate. When the same drive is mounted with geom gate on machine B, the copy rate is around 6KB/s to 25KB/s The drive was tested for I/O problems twice, and nothing was found. Any idea or suggestion as to where the problem might come from ? Thanks for your help. Jerome Herman