obex transfer speeds

[Maksim Yevmenkin]

On Tue, Dec 15, 2009 at 11:36 AM, Iain Hibbert <plunky at rya-online.net> wrote:
> Hi,
>
> While obexapp is the subject, I wonder what kind of transfer speeds people
> get?  Normally I use obexapp to copy files to and from my phone but they
> are not much big files and I've never bothered with speed tests.. I have
> been working some long hours at a tedious job lately and thought I would
> listen to some music off my phone.
>
> However, transferring tracks is tedious. I have calculated (see attached
> program) that I'm getting about 12-15 kbytes/second by using windows
> mobile bluetooth explorer in suck mode (navigate to my laptop, then copy
> and paste the directory to the sd card)
>
> using obexapp to push files seemed to go faster, about 15-20 kbytes/second
> initially but obexapp doesn't handle sending complete directories so I had
> to write a wrapper script and then when I left this going overnight it
> only transferred about 15 tracks (I think a resource leak in the phone,
> which needed a reboot afterwards)
>
> So, my question is what kind of speeds should we normally expect with
> OBEX?  I thought bluetooth should be faster than that but I don't really
> know what version my phone has (laptop has Broadcom BCM2045B 2.0+EDR and
> specs I found on the web says HTC Elf has 2.0 but I don't know about EDR)
> and I only have a single computer so while a speed test would be possible
> with two dongles, there could be interference in the stack. Has anybody
> done anything like that in the past?
>
> I read some comments previously on the list and have raised the MTU to
> 8192 bytes as suggested for an older obexapp but that hasn't improved the
> speed much. Any other ideas?

have you tried obexapp client to obexapp server transfer? i.e. pc to
pc. i suspect that mobile devices just not being able to process data
fast enough.

thanks,
max