| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | usleep | 100000 | 3,267 |
| linux | usleep | 3 | 1,360 |
| freebsd | usleep | 3 | 1,177 |
| debian | usleep | 3 | 1,081 |
| opensolaris | usleep | 3c | 1,049 |
| php | usleep | 3 | 994 |
| mojave | usleep | 3 | 960 |
| sunos | usleep | 3c | 911 |
| suse | usleep | 3 | 886 |
| osx | usleep | 3 | 872 |
| centos | usleep | 3 | 830 |
| bsd | usleep | 3 | 824 |
| redhat | usleep | 3 | 809 |
| netbsd | usleep | 3 | 802 |
| suse | usleep | 3p | 783 |
| hpux | usleep | 2 | 761 |
| minix | usleep | 1 | 714 |
| posix | usleep | 3posix | 644 |
| xfree86 | usleep | 1 | 641 |
| plan9 | usleep | 1 | 611 |
| v7 | usleep | 1 | 610 |
| x11r4 | usleep | 1 | 575 |
| centos | usleep | 3p | 571 |
| posix | usleep | 3 | 560 |
| opendarwin | usleep | 1 | 542 |
| posix | usleep | 3c | 538 |
| osf1 | usleep | 3 | 530 |
| redhat | usleep | 1 | 391 |
| centos | usleep | 1 | 362 |
| centos | usleep_range | 9 | 332 |
| debian | ggusleep | 3 | 315 |
| suse | usleep | 1 | 292 |