Graphical viewer for the Ftrace and Perf events

 The trace can be collected using trace-cmd or perf.
 It can be used to visualize the following events:
 cpu_frequency
 cpu_idle
 sched_migrate_task
 sched_process_exit
 sched_process_fork
 sched_switch
 sched_wakeup
 sched_wakeup_new
 sched_waking