ts_timeleft	Number of ticks remaining in thread's quantum
ts_dispwait	Number of seconds since process was last started
		(used to prevent starvation and promote threads)

ts_cpupri	Dynamically adjusted based on ts_dptbl[ts_cpupri]
ts_uprilim	Limit on ts_upri
ts_upri		Set by user
ts_umdpri	Index into ts_dptbl; ts_cpupri + ts_upri + ts_boost
ts_nice		Niceness value, used and changed only by ts_donice

ts_boost	IA offset; irrelevant?
ts_flags	TSKPRI		At kernel mode priority
		TSBACKQ		Go to the back of the queue when preempted
		TSIA		Interactive
		TSIASET		Interactive thread "on"
		TSIANICED	Niced interactive thread
ts_tp		The actual kthread_t
ts_next		List
ts_prev		List