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 ?
Jean
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