I seem to recall a comment during a discussion about fast/slow
interrupts that the split was originally in order to be able to get an
8250 to run at 115Kbps - can the current kernels approach (or even
beat) that sort of performance.
I ask because I have a need to route IP packets comming in over three
64Kbps synchronous serial links to a LAN. One option is to use a
couple of z8530 cards and write a linux driver for them (probably
based on the old kiss tnc driver). Naïvely this seems to imply
handling 24,000 interrupts per second which seems a tall order on its
own without considering ppp, routing sending and recieving ethernet
packets and, occasionally, doing disk I/O.
Does anyone have experience with these devices at this speed? Is Linux
up to this sort of I/O load? Should I even be considering doing it
this way?
Regards
Paul.