From owner-freebsd-bluetooth@FreeBSD.ORG Sat Feb 17 05:14:32 2007 Return-Path: X-Original-To: freebsd-bluetooth@freebsd.org Delivered-To: freebsd-bluetooth@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F20F016A401 for ; Sat, 17 Feb 2007 05:14:31 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from mh1.centtech.com (moat3.centtech.com [64.129.166.50]) by mx1.freebsd.org (Postfix) with ESMTP id CAB4E13C474 for ; Sat, 17 Feb 2007 05:14:31 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from [192.168.42.21] (andersonbox1.centtech.com [192.168.42.21]) by mh1.centtech.com (8.13.8/8.13.8) with ESMTP id l1H5EUvw083031; Fri, 16 Feb 2007 23:14:30 -0600 (CST) (envelope-from anderson@centtech.com) Message-ID: <45D68F37.7040105@centtech.com> Date: Fri, 16 Feb 2007 23:14:31 -0600 From: Eric Anderson User-Agent: Thunderbird 1.5.0.9 (X11/20070204) MIME-Version: 1.0 To: Maksim Yevmenkin References: <45D5F027.7060401@centtech.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.4/2586/Fri Feb 16 21:52:45 2007 on mh1.centtech.com X-Virus-Status: Clean X-Spam-Status: No, score=-2.5 required=8.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on mh1.centtech.com Cc: "freebsd-bluetooth@freebsd.org" Subject: Re: Prioritizing bluetooth devices? X-BeenThere: freebsd-bluetooth@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Using Bluetooth in FreeBSD environments List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Feb 2007 05:14:32 -0000 On 02/16/07 17:37, Maksim Yevmenkin wrote: > Eric, > >> I have just set up my Treo 700p using bluetooth and kpilot to sync >> (thanks Bruce/Maksim!!!!). I notice that when I'm doing a backup of my >> palm and it's downloading a ton of stuff, my bluetooth connection is >> jammed full, so my bluetooth mouse is slow/lags. I don't have a >> bluetooth keyboard, but if I did (and if it worked), then I'm certain it >> would be present there too. >> >> So, my question is: is it possible to prioritize the bluetooth profiles >> so that HID gets priority over things like serial, LAN, etc? > > in theory, this should not be happening, because each bluetooth slave > has reserved slots in which it can transmit data. also bluetooth hid > devices usually set "quality of service" parameters on bluetooth link. > > so, the problem could be either in the freebsd bluetooth code itself > (i.e. it uses very simple packet scheduler that might not behave very > well under load) or in packet scheduler in the device's "link > manager", i.e. firmware. The system was idle (CPU-wise) but I had the bluetooth link slammed transferring the entire contents of my palm (about 50MB). I've never had a problem otherwise, even when keeping both CPU's (this is a Core 2 Duo system) hammered. As soon as the transfer stopped, mouse was again responsive. > other than setting "quality of service" parameters on bluetooth link > and/or forcing device to use only packets of certain size (i.e. 1,2 or > 3-slots, which, btw, likely to reduce throughput) i doubt there is > anything else (standard) that can be used to prioritize bluetooth > profiles. > > if you can, please try to switch to bluetooth 2.0 dongle (if you have > not already) As far as I know, this is a 2.0 dongle already (came with my laptop - Dell D820, so it's built in). Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology An undefined problem has an infinite number of solutions. ------------------------------------------------------------------------