| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | usleep | 100000 | 1,433 |
| php | sleep | 3 | 884 |
| linux | sleep | 3 | 772 |
| linux | sleep | 1 | 771 |
| suse | sleep | 3 | 760 |
| centos | sleep | 3 | 715 |
| centos | sleep | 1 | 691 |
| debian | sleep | 9 | 690 |
| opendarwin | sleep | 1 | 669 |
| xfree86 | sleep | 1 | 620 |
| plan9 | sleep | 2 | 618 |
| linux | usleep | 3 | 616 |
| x11r4 | sleep | 1 | 615 |
| v7 | sleep | 3 | 597 |
| debian | sleep | 1 | 591 |
| posix | sleep | 1p | 578 |
| mojave | sleep | 3 | 564 |
| osx | sleep | 3 | 545 |
| minix | sleep | 3 | 529 |
| osx | sleep | 1 | 511 |
| freebsd | sleep | 1 | 491 |
| sunos | sleep | 3c | 482 |
| freebsd | usleep | 3 | 476 |
| opensolaris | sleep | 3c | 469 |
| redhat | sleep | 3 | 468 |
| bsd | sleep | 1 | 442 |
| v7 | msleep | 9 | 432 |
| hpux | sleep | 3c | 432 |
| php | usleep | 3 | 430 |
| freebsd | nanosleep | 2 | 422 |
| debian | sleep | 3 | 415 |
| freebsd | sleep | 9 | 393 |
| opensolaris | usleep | 3c | 391 |
| netbsd | sleep | 3 | 390 |
| debian | usleep | 3 | 385 |
| netbsd | sleep | 1 | 375 |
| bsd | sleep | 3f | 367 |
| opensolaris | sleep | 1 | 363 |
| linux | nanosleep | 2 | 359 |
| sunos | sleep | 1 | 358 |
| posix | usleep | 3posix | 357 |
| netbsd | nanosleep | 2 | 355 |
| freebsd | msleep | 9 | 349 |
| suse | sleep | 1 | 346 |
| hpux | usleep | 2 | 345 |
| suse | usleep | 3 | 341 |
| osx | usleep | 3 | 340 |
| sunos | usleep | 3c | 338 |
| centos | usleep | 3 | 338 |
| mojave | sleep | 1 | 337 |