(PECL eio >= 0.0.1dev)
eio_busy — Artificially increase load. Could be useful in tests, benchmarking
$delay,$pri = EIO_PRI_DEFAULT,$callback = NULL,$data = NULLeio_busy() artificially increases load taking delay seconds to execute. May be used for debugging, or benchmarking.
delaypriThe request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or null. If null passed, pri internally is set to EIO_PRI_DEFAULT.
callbackdatacallback.eio_busy() returns request resource on success, or false on failure.