Unscientific tests that have informed various decisions.
e.g. when waiting for a proc_open() process to terminate:
| Statement | CPU time | % of elapsed time |
|---|---|---|
| none | 9984.34ms | 99.84% |
usleep(1) |
1234.08ms | 12.34% |
usleep(10) |
232.06ms | 2.32% |
usleep(100) |
94.29ms | 0.94% |
usleep(1000) |
25.15ms | 0.25% |
usleep(10000) |
6.00ms | 0.06% |
usleep(100000) |
2.34ms | 0.02% |