bge dropping packets issue

[Robert Watson]

On Thu, 17 Apr 2008, Alexander Sack wrote:

> Robert, alright, this all makes sense.  So it seems to me that the first 
> step to salvation in my world is to turn off DEVICE_POLLING and rely on the 
> interrupt coalescing that exists on the card.  My only concern if this does 
> work is what impact this has on the overall system.

I would generally discourage use of our current DEVICE_POLLING code using 
modern network devices, as the polling rate as compared to buffer size has 
changed significantly, meaning that polling rates have to be set ridiculously 
high.  Also, I suspect strongly that it interacts badly with our 
ithread/scheduling/etc parts, which might lead to difficult to diagnose 
problems.  Interrupt moderation is not as featureful as DEVICE_POLLING, but it 
is better supported; I'd like to see further work done to allow us to pick up 
some of the scheduling features for ithreads as well in the future.

Robert N M Watson
Computer Laboratory
University of Cambridge