it_interval        63 src/prof.c             tval.it_interval.tv_sec = 0;                    \
it_interval        64 src/prof.c             tval.it_interval.tv_usec = SAMPLING_PERIOD;     \
it_interval        73 src/prof.c             tval.it_interval.tv_sec = 0;            \
it_interval        74 src/prof.c             tval.it_interval.tv_usec = 0;           \