Polling and Sleep in a Driver

[Len Gross]

I have a MAC protocol written using Netgraph.   It runs in userland
and uses a simple poll, sleep loop.  It has proved that the algorithms
are correct, but the sleeps are not regular/accurate enough for my
purposes.  (I have pushed Hz up quite a bit with no real effect)

If I were to implement the algorithms within a driver would the sleeps
still suffer from the same "non real-time" behaviour I see in
userland?

Thanks in advance.

-- Len