db> t 2    (g_event)
tracing pid 2 tid 100011 td 0xc4ce8cc0
sched_switch(c4ce8cc0,0,1,180,e7edade4,...)
mi_switch(1,0,c083cab9,1bd,4c,...)
sleepq_switch(c4ce8cc0,0,c083cab9,23e,4c,...)
sleepq_timedwait(c54648c4,64,c0832045,0,0,...)
_sleep(c54648c4,c091e1b8,4c,c0832045,64,...)
biowait(c54648c4,c0832045,2,200,0,...)
g_read_data(c516c340,200,0,200,0,...)
g_bsd_try(200,c4dfd400,200,0,e3891c74,...)
g_bsd_taste(c0881a00,c5047a80,0,1de,c504ee00,...)
g_new_provider_event(c5047a80,0,c0831bd3,d0,0,...)
g_run_events(c08ca580,0,4c,c08309b8,64,...)
g_event_procbody(0,e3891d48,c0835a44,315,c4d312ac,...)
fork_exit(c0560740,0,e3891d38)
fork_trampoline()

db> t 832  (gv_worker)
tracing pid 832 tid 100069 td 0xc4e37880
sched_switch(c4e37880,0,1,180,74d6f748,...)
mi_switch(1,0,c083cab9,1bd,c4e37880,...)
sleepq_switch(c4e37880,0,c083cab9,21b,c08ca54c,...)
sleepq_wait(c08ca54c,0,c08320b1,3,0,...)
_sx_xlock_hard(c08ca54c,c4e37880,0,c545adc5,67,...)
_sx_xlock(c08ca54c,0,c545adc5,67,e5437c64,...)
gv_save_config(c5426980,0,c545a64,225,64,...)
gv_worker...
fork_exit...
fork_trampoline...