how to measure energy efficiency, latency and packet delivery ratio in contiki os?

Question

Recently I have started working on Contiki OS. I am trying to analyze few parameters like energy efficiency, latency, delivery ratio etc with different deployment scenarios. I am using TelosB as the hardware platform.

Could you please suggest me how to calculate energy efficiency, latency, delivery ratio in Contiki OS?

Are there any sample codes available, which can be used to obtain these parameters ?

Answer 1

As watou suggests, powertrace is the first tool to try. It is an app you can find alredy in your Contiki installation and runs really simply and effectively. It can give you power consuption information (or more specifically, tx/rx/cpu/listen/idle states duration) and also sniff packets (then enabling the study on power loss and network performance).

To insert in your app you have to:

1) Add the powertrace APP in your Makefile (like this),

2) Include powertrace.h in your main.c file,

3) Insert a call to powertrace_start(CLOCK_SECOND * your_interval) to print statistic periodically or put powertrace_print("your label"); within your code.

Finally, if you want to navigate further you should put some sensing onto your circuit.