newbi question about data sampling rate

So I am trying to understand how the arduino boatloader works. Does anyone know how to work out how many samples (or is it cycles?) per second is it sending out with these specs;

code for 2 analog channels with an 8 channel mux on each, sent at a baud rate of 9600. So is the deal that the looping code is only sampling the 2 analog pins, and doing some truth table stuff on each pin on both multiplexers, plus any other stuff it has to do in the bootloaded headers etc

Does anyone know how to work this out?

Thanks a lot in advance! f

plus any other stuff it has to do in the bootloaded headers etc

No once the code is in the arduino the bootloader is totally inactive.
It only works when you are uploading code.