Pcomm too slow on console

[Steve Barber]

Has anyone else noticed a problem with Pcomm not being able to keep
up with a 2400bps data flow?  I have an external 2400bps modem connected
to my 3B1, and whenever I use Pcomm to dial out (hardly at all any more,
due to this problem and the fact that I've got everything in ATE working
correctly now) I can really see the speed problem.  To my eye it looks
like it might even be slower than 1200bps.  I don't seem to have this
problem when using pcomm from a terminal rather than the console.

I thus suspect the console drivers for being the guilty party, rather
than pcomm itself.  It's just painfully obvious to me when using pcomm.

I *know* the console window can display data faster than that.  My
question is, why is it so slow with pcomm?  Maybe it's all the extra
overhead of using RAW or CBREAK mode?  I've noticed that you can see
long ksh prompts (in emacs mode, which would be CBREAK?) printing
character by character as well.

I investigated the tty code in pcomm to some extent and saw no reason
for it to be the cause of the problem.

Am I the only one seeing this problem?

BTW: has anyone hacked a terminal emulation add-on to pcomm?

-- 
Steve Barber   ...!umix!shade!steveb   "Did I say that?"