Help with analysing JIT perf report

Perf report shows me things that I cannot analyse:


+   63.85%    51.25%  streamer  beam.lcnt.smp           [.] erts_schedule
+   59.99%     0.02%  streamer  beam.lcnt.smp           [.]
erts_dirty_process_main
+   29.50%     0.04%  streamer  jitted-881027-8664.so   [.]
gen_server:handle_msg/6
+   25.66%     0.04%  streamer  jitted-881027-34178.so  [.]
mpts_reader:handle_info/2


mpts_reader is my code and thanks for pointing out to me that it seems
to be the CPU eater.

I cannot understand what means that erts_schedule takes 63 / 51% of time.
Is erts_schedule a container to all functions below?