| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | usleep | 100000 | 2,019 |
| linux | usleep | 3 | 712 |
| freebsd | usleep | 3 | 601 |
| php | usleep | 3 | 566 |
| opensolaris | usleep | 3c | 501 |
| debian | usleep | 3 | 485 |
| sunos | usleep | 3c | 444 |
| osx | usleep | 3 | 433 |
| centos | usleep | 3 | 428 |
| mojave | usleep | 3 | 427 |
| suse | usleep | 3 | 424 |
| posix | usleep | 3posix | 408 |
| bsd | usleep | 3 | 404 |
| hpux | usleep | 2 | 404 |
| redhat | usleep | 3 | 361 |
| netbsd | usleep | 3 | 351 |
| suse | usleep | 3p | 324 |
| v7 | usleep | 1 | 301 |
| minix | usleep | 1 | 293 |
| posix | usleep | 3 | 292 |
| plan9 | usleep | 1 | 290 |
| xfree86 | usleep | 1 | 282 |
| x11r4 | usleep | 1 | 272 |
| centos | usleep | 3p | 266 |
| osf1 | usleep | 3 | 249 |
| opendarwin | usleep | 1 | 240 |
| posix | usleep | 3c | 238 |
| redhat | usleep | 1 | 218 |
| centos | usleep | 1 | 200 |
| centos | usleep_range | 9 | 178 |
| debian | ggusleep | 3 | 159 |
| suse | usleep | 1 | 151 |