Jean wrote:
> Hi,
>
> As Belkin doesn't seem interested in answering me, I think I
> will have to buy some other dongle...
>
> From US, it's quite easy to buy an Actisys or a JetEye, and
> there are approx the same price. Puma/Tekram seems a bit more
> expensive, and LiteLink (if it still exist) is physically too big.
> Now, I had a look at the driver to see the capability of the
> drivers. These are my conclusions :
> o esi.c : only 3 speeds possible, turnaround 10ms
> o litelink.c : seems really good on everything
> o actisys.c : 40 ms to move from one speed to the next
> o tekram.c : 100 ms to set speed, 10ms turnaround
> I believe that having many speed doesn't matter much, because
> 115kb/s is almost as reliable as 9.6kb/s, so as long as you do 9.6kb/s
> and 115kb/s you are ok.
> On the other hand, time to change speed is important, because
> latency is already an issue, especially if you do lot's of small
> transfer (like using IrObex). Having n x 40 ms or 100 ms dead time
> before each transfer seems to me some undue overhead (it's 1.4 kB at
> 115 kb/s). The same for a 10ms turnaround...
> On the other hand, maybe I misread the drivers and that those
> values are us (which would fit my hardware assumptions), or maybe
> there is so many other latencies issues in the IrDA stack that in fact
> it doesn't matter...
>
> So, could anybody comment on the dongle performance ?
There must be a mistake in the Actisys Driver. It takes 40 microseconds
to switch the speed. Someone mis-read microseconds as miniseconds.
Are you talking about the Driver in linux?
Lichen Wang, Actisys
_______________________________________________
Linux-IrDA mailing list - [EMAIL PROTECTED]
http://www4.pasta.cs.UiT.No/mailman/listinfo/linux-irda
