select sleep is more accurate than sleep

int mySleep(int second, int microsecond) { timeval t_timeval; t_timeval.tv_sec = second; t_timeval.tv_usec = microsecond; select(0, NULL, NULL, NULL, &t_timeval); return 0; }

//Some code in kfs is written like this

fd_set rfds; struct timeval timeout; timeout.tv_sec = 5; timeout.tv_usec = 0; FD_ZERO(&rfds); FD_SET(0, &rfds); select(1, &rfds, NULL, NULL, &timeout);

//Block for 5 seconds

sleep: The unit is seconds, 1 second

usleep: The unit is microseconds, 1/1000 000 seconds, one millionth of a second

select: The unit is microseconds, 1/1000 000 seconds, one millionth of a second

nanosleep: The unit is nanoseconds, that is, nanoseconds, 1/1000 000 000 seconds