From owner-freebsd-usb@FreeBSD.ORG Sun Aug 13 21:18:08 2006 Return-Path: X-Original-To: freebsd-usb@freebsd.org Delivered-To: freebsd-usb@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6D18816A4DE for ; Sun, 13 Aug 2006 21:18:08 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1.sentex.ca [64.7.153.18]) by mx1.FreeBSD.org (Postfix) with ESMTP id 054CA43D49 for ; Sun, 13 Aug 2006 21:18:07 +0000 (GMT) (envelope-from mike@sentex.net) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by smarthost1.sentex.ca (8.13.6/8.13.6) with ESMTP id k7DLI47m096626; Sun, 13 Aug 2006 17:18:04 -0400 (EDT) (envelope-from mike@sentex.net) Received: from simian.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.13.6/8.13.3) with ESMTP id k7DLI4u9053887 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 13 Aug 2006 17:18:04 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <6.2.3.4.0.20060813170759.12be7730@64.7.153.2> X-Mailer: QUALCOMM Windows Eudora Version 6.2.3.4 Date: Sun, 13 Aug 2006 17:17:23 -0400 To: Marc van Woerkom , freebsd-usb@freebsd.org From: Mike Tancsa In-Reply-To: <44DF8308.9080700@fernuni-hagen.de> References: <44DF8308.9080700@fernuni-hagen.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Virus-Scanned: ClamAV version 0.88.3, clamav-milter version 0.88.3 on clamscanner2 X-Virus-Status: Clean Cc: Subject: Re: [Fwd: SD card speed] X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Aug 2006 21:18:08 -0000 At 03:52 PM 13/08/2006, Marc van Woerkom wrote: >Maybe someone here can give a comment? > >But writing speed seems slow to me, I measure about 56 to 64 kbyte/s transfer >rate only: > tty ad0 da2 cpu >tin tout KB/t xfrs MB KB/t xfrs MB us ni sy in id > 2 110 16.00 1 0.02 8.00 7 0.05 19 0 4 2 75 > 9 209 16.00 1 0.02 8.00 7 0.05 17 0 2 1 80 > 8 94 8.00 1 0.01 8.00 7 0.05 19 0 2 1 78 > 12 110 40.00 2 0.08 8.00 8 0.06 28 0 2 2 68 That seems pretty slow. I get about 2.7MB/s on writes. How are you writing to it? port 5 addr 2: high speed, power 250 mA, config 1, Mass Storage Device(0x6362), Generic(0x058f), rev 1.10 This is against 50x CF % iostat -c 1000 da1 tty da1 cpu tin tout KB/t tps MB/s us ni sy in id 0 1 61.19 0 0.01 0 0 0 0 100 0 130 64.00 42 2.62 0 0 0 0 100 0 44 64.00 43 2.68 0 0 2 0 98 0 43 64.00 42 2.62 0 0 3 0 97 0 43 64.00 43 2.68 1 0 1 0 98 0 43 64.00 41 2.56 0 0 4 0 96 # dd if=/usr/obj/nanobsd.sentex/_.disk.full of=/dev/da1 obs=64k 1007616+0 records in 7872+0 records out 515899392 bytes transferred in 185.655989 secs (2778792 bytes/sec) ---Mike