The Mobile CPU Core-Count Debate: Analyzing The Real Worldby Andrei Frumusanu on September 1, 2015 8:00 AM EST
Hangouts Writing A Message
On the little cores we see a very variable load. In general, it looks like all 4 little cores are used at medium load. CPU frequency as well doesn't look to reach the higher frequency states and tends to fluctuate on the lower-end of the available range.
The big cores aren't active at all. It's only when sending the message that the cores kick into gear for a very short burst. The rest of the time, they're residing on at minimim frequency in their power-gated states.
As the big cores didn't have much scheduled on them, the total rq-graph for the whole system doesn't look very different from the one on the little cores. Writing messages is definitely a low-end task that doesn't require too much processing power.