rt_sigprocmask(SIG_BLOCK, [IO], [], 8)  = 0
rt_sigprocmask(SIG_UNBLOCK, [IO], NULL, 8) = 0
setitimer(ITIMER_REAL, {it_interval={0, 20000}, it_value={0, 20000}}, NULL) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
select(256, [1 4 6 8 10 11 13 14 15 16 17 18 19 20 21], NULL, NULL, NULL) = 1 (in [11])