Measure data movement Distributed

Is there any way to measure the amount of data getting sent to workers? For the example in the Data Movement section of the Distributed Manual, it would be very helpful to tell if a call is moving data or not, to directly compare, especially when data movement can be both implicit and explicit.

I have a case where two processes have a variable theta, but theta is still getting moved to the worker, instead of the worker using the theta native to the process.