From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IwH6p-00048h-Dx for qemu-devel@nongnu.org; Sun, 25 Nov 2007 08:01:15 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IwH6n-00047b-Ko for qemu-devel@nongnu.org; Sun, 25 Nov 2007 08:01:14 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IwH6n-00047S-9Z for qemu-devel@nongnu.org; Sun, 25 Nov 2007 08:01:13 -0500 Received: from mail62.opentransfer.com ([76.162.254.62]) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1IwH6l-0004MC-RB for qemu-devel@nongnu.org; Sun, 25 Nov 2007 08:01:12 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) by gateway.localdomain (Postfix) with ESMTP id C55FF269759 for ; Sun, 25 Nov 2007 08:01:09 -0500 (EST) Message-ID: <47497215.2040002@mmri.us> Date: Sun, 25 Nov 2007 08:01:09 -0500 From: "admin@mmri.us" MIME-Version: 1.0 Subject: Re: [Qemu-devel] USB performance Question References: <4743FCD5.2090209@mmri.us> In-Reply-To: <4743FCD5.2090209@mmri.us> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Does anyone have a comment about this? It would be interesting to know where the USB development is going as it is extremely promising and the only small obstacle (i.m.o) for full feature device access. The only remaining barrier is speed which should be improved. I can look at the code if someone can point me to where in the sources the USB interface is. thanks admin@mmri.us wrote: > I could get very complicated USB devices to work under Qemu with > Windows as guest, Linux as host. > This is pretty amazing development and I must congratulate the Qemu > developers. > > > The only problem is the USB speed. > I get only about 10kbit/s max! > This is measured by downloading a 1MByte scientific camera image. > > > Is this the expected USB speed at the moment or is there anything I > can do to improve speed? > > Thanks > > > >