| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | usleep | 100000 | 3,115 |
| linux | usleep | 3 | 1,194 |
| freebsd | usleep | 3 | 1,032 |
| debian | usleep | 3 | 948 |
| opensolaris | usleep | 3c | 931 |
| php | usleep | 3 | 878 |
| mojave | usleep | 3 | 841 |
| sunos | usleep | 3c | 808 |
| suse | usleep | 3 | 787 |
| centos | usleep | 3 | 760 |
| osx | usleep | 3 | 746 |
| bsd | usleep | 3 | 732 |
| suse | usleep | 3p | 719 |
| redhat | usleep | 3 | 714 |
| netbsd | usleep | 3 | 700 |
| hpux | usleep | 2 | 690 |
| minix | usleep | 1 | 625 |
| posix | usleep | 3posix | 588 |
| xfree86 | usleep | 1 | 564 |
| plan9 | usleep | 1 | 541 |
| v7 | usleep | 1 | 531 |
| x11r4 | usleep | 1 | 506 |
| centos | usleep | 3p | 502 |
| posix | usleep | 3 | 496 |
| opendarwin | usleep | 1 | 488 |
| osf1 | usleep | 3 | 472 |
| posix | usleep | 3c | 452 |
| redhat | usleep | 1 | 335 |
| centos | usleep | 1 | 316 |
| centos | usleep_range | 9 | 295 |
| debian | ggusleep | 3 | 267 |
| suse | usleep | 1 | 255 |