From owner-freebsd-usb@FreeBSD.ORG Tue Jun 13 15:51:06 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 D3D7316A418 for ; Tue, 13 Jun 2006 15:51:06 +0000 (UTC) (envelope-from hselasky@c2i.net) Received: from mail49.e.nsc.no (mail49.e.nsc.no [193.213.115.49]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E9E343D72 for ; Tue, 13 Jun 2006 15:51:05 +0000 (GMT) (envelope-from hselasky@c2i.net) Received: from Unknown-00-c0-9f-49-78-d8.lan (ti131310a080-15519.bb.online.no [85.165.252.159]) by mail49.nsc.no (8.13.6/8.13.5) with ESMTP id k5DFoxEe007116; Tue, 13 Jun 2006 17:50:59 +0200 (CEST) From: Hans Petter Selasky To: =?windows-1251?b?wuDx6Ovo6SDP5fLw7uI=?= Date: Tue, 13 Jun 2006 17:51:01 +0200 User-Agent: KMail/1.7 References: <200606131231.48216.larry@fantasyclub.ru> <200606131645.13089.hselasky@c2i.net> <200606131905.49741.larry@fantasyclub.ru> In-Reply-To: <200606131905.49741.larry@fantasyclub.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1251" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200606131751.02348.hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: High speed USB 2.0 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: Tue, 13 Jun 2006 15:51:06 -0000 Hi, On Tuesday 13 June 2006 17:05, =C2=E0=F1=E8=EB=E8=E9 =CF=E5=F2=F0=EE=E2 wro= te: > > > > Yet I don't understand, must high-speed devices work with bundled > > > FreeBSD drivers and it is my conf problem or this is not supported by > > > them? I haven't found any mentions about it in mailing lists nor PRs. > > > > Your config is supported by FreeBSD 6.0-RELEASE. > > I've done dd tests and got VERY strange results. When I try to read from > device itself (/dev/da0 or /dev/da0s1) I have 27Mb/sec. > However when I mount NTFS partition, that resides on that drive, big file > is read from that partition at 600Kb/sec. I understand, that there is some > overhead, but not that much of course. > So it seems that problem not with USB, but with what then?=20 One of the upper layers are probably reading too small chunks of data at a= =20 time. Probably it has got something to do with the implementation of the NT= =46S=20 driver. I think you will get better results with UFS and FAT32, for example= =2E=20 I am not an expert at file systems. =2D-HPS