From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-users] Low bit rate From: Marcel Holtmann To: Ramin Rezaiifar Cc: BlueZ Mailing List In-Reply-To: <40DAFE80.2010207@popak.myftp.org> References: <40DA45E0.9000207@popak.myftp.org> <1088068716.4296.35.camel@pegasus> <40DAFE80.2010207@popak.myftp.org> Content-Type: text/plain Message-Id: <1088098195.4296.65.camel@pegasus> Mime-Version: 1.0 Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Date: Thu, 24 Jun 2004 19:29:55 +0200 Hi Rmain, > > actually I don't use Windows, so I can't tell. In general the BlueZ is > > as fast as possible. Maybe it is a RFCOMM flow control problem. > Can the flow control in RFCOMM be disabled? If yes, how can that be > done? no, because otherwise you won't get a stream. Regards Marcel ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <40DAFE80.2010207@popak.myftp.org> Date: Thu, 24 Jun 2004 09:17:04 -0700 From: Ramin Rezaiifar MIME-Version: 1.0 To: Marcel Holtmann CC: BlueZ Mailing List Subject: Re: [Bluez-users] Low bit rate References: <40DA45E0.9000207@popak.myftp.org> <1088068716.4296.35.camel@pegasus> In-Reply-To: <1088068716.4296.35.camel@pegasus> Content-Type: text/html; charset=us-ascii List-ID:

Marcel Holtmann wrote:

Hi Ramin,

I use the bluetooth link between a Palm T3 and a Linux machine.
The data rate seems to be noticeably lower than the rate when I use the 
Palm device with a Windows XP machine.  In both cases I use a Linksys 
USB dongle.


actually I don't use Windows, so I can't tell. In general the BlueZ is
as fast as possible. Maybe it is a RFCOMM flow control problem.

Can the flow control in RFCOMM be disabled? If yes, how can that be done?

thanks,

-Ramin

 Make
sure that you use the latest Linux kernel.

Can I increase the rate with the hcitool by changing the pcacket type 
for the connection?


No. Changing the packet types makes it only worse. Let the link manager
be able to use every packet type and let it choose the best for your
current connection.

Regards

Marcel




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From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-users] Low bit rate From: Marcel Holtmann To: Ramin Rezaiifar Cc: BlueZ Mailing List In-Reply-To: <40DA45E0.9000207@popak.myftp.org> References: <40DA45E0.9000207@popak.myftp.org> Content-Type: text/plain Message-Id: <1088068716.4296.35.camel@pegasus> Mime-Version: 1.0 Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Date: Thu, 24 Jun 2004 11:18:37 +0200 Hi Ramin, > I use the bluetooth link between a Palm T3 and a Linux machine. > The data rate seems to be noticeably lower than the rate when I use the > Palm device with a Windows XP machine. In both cases I use a Linksys > USB dongle. actually I don't use Windows, so I can't tell. In general the BlueZ is as fast as possible. Maybe it is a RFCOMM flow control problem. Make sure that you use the latest Linux kernel. > Can I increase the rate with the hcitool by changing the pcacket type > for the connection? No. Changing the packet types makes it only worse. Let the link manager be able to use every packet type and let it choose the best for your current connection. Regards Marcel ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <40DA45E0.9000207@popak.myftp.org> From: Ramin Rezaiifar MIME-Version: 1.0 To: bluez-users@lists.sourceforge.net Content-Type: text/plain; charset=ISO-8859-1; format=flowed Subject: [Bluez-users] Low bit rate Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Date: Wed, 23 Jun 2004 20:09:20 -0700 I use the bluetooth link between a Palm T3 and a Linux machine. The data rate seems to be noticeably lower than the rate when I use the Palm device with a Windows XP machine. In both cases I use a Linksys USB dongle. The following is the hciconfig output. Has anyone else experienced such a difference between windows and Linux? Can I increase the rate with the hcitool by changing the pcacket type for the connection? thanks, -Ramin [root@popak root]# hciconfig -a hci0: Type: USB BD Address: 00:0C:41:E1:E9:E1 ACL MTU: 192:8 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN AUTH RX bytes:1554350 acl:33441 sco:0 events:55264 errors:0 TX bytes:9553470 acl:66586 sco:0 commands:160 errors:0 Features: 0xff 0xff 0x0f 0x00 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: HOLD SNIFF PARK Link mode: SLAVE ACCEPT Name: 'popak.myftp.org-0' Class: 0x120104 Service Classes: Networking, Object Transfer Device Class: Computer, Desktop workstation HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver: 0x20d Manufacturer: Cambridge Silicon Radio (10) ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users