as they are the setrunqueue() and sched_add() calls. Since they happen
immediately before the thread is placed on a run queue they would normally
dwarf the more informative preemption or yield event and it is implicitly
understood that a thread is back on the run queue as part of these events.
python and tkinter. Schedgraph takes input from files produces by
ktrdump -ct when KTR_SCHED is compiled into the kernel. The output
represents the states of each thread with colored line segments as well
as colored points for non-state scheduler events. Each line segment and
point is clickable to obtain extra detail.
