We are in the process of selecting a RT OS for PC so maybe one
of you could/would fill me in a bit on the RT capabilities of
QNX. I have all the adverti*ts and read the stuff on the
QNX-site but I need more specific information.
First of all, on a normal PC (ISA or PCI bus) do you know what
timer resolution/accuracy/granularity QNX would give me? I'm
interested in, for example, repetitive interval timers (min
interval, jitter for a task tied to itimer?), interval
measurement like timer_start, do_something, timer_stop
(accuracy, granularity (us, ms) etc?)).
Also I'm very interested in the low-level networking stuff.
How do I speak with network drivers (I heard Clarkson/Crynwr
packet driver interface, correct?, but isn't that a 16 bit
interface while QNX is 32 bit?). Is there any way one can enforce
deterministic network traffic (end-to-end delays) or does QNX just
do a best effort at quickly delivering stuff?
Delft University of Technology