From owner-freebsd-current@FreeBSD.ORG Mon May 26 07:47:47 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D195237B401 for ; Mon, 26 May 2003 07:47:47 -0700 (PDT) Received: from rzaixsrv2.rrz.uni-hamburg.de (rzaixsrv2.rrz.uni-hamburg.de [134.100.32.71]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4499A43F3F for ; Mon, 26 May 2003 07:47:46 -0700 (PDT) (envelope-from doc@zwecker.de) Received: from smtp.dmz.his-online.de ([134.100.58.126])h4QElix51890 verified NO) for ; Mon, 26 May 2003 16:47:44 +0200 Received: from his-online.de (localhost.localdomain [127.0.0.1]) by smtp.dmz.his-online.de (8.12.8/8.12.8) with ESMTP id h4QElhu5003138 for ; Mon, 26 May 2003 16:47:43 +0200 Received: from eremit.zwecker.de ([192.168.1.143]) by his-online.de; Mon, 26 May 2003 16:47:24 +0200 Received: from zwecker.de (localhost [127.0.0.1]) by eremit.zwecker.de (8.12.9/8.12.4) with ESMTP id h4QElMKV024731; Mon, 26 May 2003 16:47:23 +0200 Message-ID: <3ED228FA.6030902@zwecker.de> Date: Mon, 26 May 2003 16:47:22 +0200 From: Christophe Zwecker User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3) Gecko/20030425 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Heiko Schaefer , current@freebsd.org References: <3ED203E6.1000202@zwecker.de> <20030526141901.J294@daneel.foundation.hs> In-Reply-To: <20030526141901.J294@daneel.foundation.hs> X-Enigmail-Version: 0.73.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=-11.8 required=5.0 tests=AWL,BAYES_30,EMAIL_ATTRIBUTION,IN_REP_TO,QUOTED_EMAIL_TEXT, REFERENCES,REPLY_WITH_QUOTES,USER_AGENT_MOZILLA_UA version=2.55 X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) Subject: Re: gbde Performance - 35Mb/s vs 5.2 MB/s X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Mon, 26 May 2003 14:47:48 -0000 Heiko Schaefer wrote: > Hi Christophe, > Poul gave me the following tip on this list in a mail on Tue, 29 Apr 2003: > > "Remember to set the sectorsize in gbde (gbde init -i) to the fragment > size of your filesystem (typically 2048 for ufs), this is critical > for performance." > > did you do that? yes, he gave me the same tip, before that I hat 1.8mb (!) since my cpu is faster than yours I should easily reach the 10MB/s and more. > i do not have exact numbers, but i think i can get approx 10MB/s writing > on my gbde disks with an athlon xp 1800+. > > ...i would be curious about what top (or ps auxw) tell you while you use > your gbde disk. from what i've experienced, your cpu shouldn't be maxed > out with 5MB/s throughput. the dd command takes max 5% cpu load while doing the test > gbde is fairly slow for me too, but by using "gbde init -i", the cpu is > the limiting factor. and i'm fairly fine with that, assuming the crypto > that is done is sound :) ...unfortunately only with time that will become > somewhat certain. well you know wether it will speed up later on ? Its ok, unless I have to reformat, I dont have the means to backup 700gb of data just like that. thx for your comments anyway ! Christophe -- Christophe Zwecker mail: doc@zwecker.de Hamburg, Germany fon: +49 179 3994867 http://www.zwecker.de "Who is General Failure ? And why is he reading my disk ??"