| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | usleep | 100000 | 2,684 |
| linux | usleep | 3 | 892 |
| freebsd | usleep | 3 | 806 |
| php | usleep | 3 | 710 |
| opensolaris | usleep | 3c | 687 |
| debian | usleep | 3 | 669 |
| mojave | usleep | 3 | 602 |
| sunos | usleep | 3c | 596 |
| suse | usleep | 3p | 593 |
| bsd | usleep | 3 | 577 |
| centos | usleep | 3 | 573 |
| osx | usleep | 3 | 570 |
| suse | usleep | 3 | 566 |
| hpux | usleep | 2 | 512 |
| redhat | usleep | 3 | 507 |
| posix | usleep | 3posix | 477 |
| netbsd | usleep | 3 | 474 |
| minix | usleep | 1 | 438 |
| v7 | usleep | 1 | 409 |
| xfree86 | usleep | 1 | 398 |
| plan9 | usleep | 1 | 394 |
| x11r4 | usleep | 1 | 386 |
| centos | usleep | 3p | 378 |
| posix | usleep | 3 | 374 |
| osf1 | usleep | 3 | 336 |
| opendarwin | usleep | 1 | 325 |
| posix | usleep | 3c | 317 |
| redhat | usleep | 1 | 275 |
| centos | usleep | 1 | 241 |
| centos | usleep_range | 9 | 219 |
| debian | ggusleep | 3 | 204 |
| suse | usleep | 1 | 202 |