php man page for eio_busy

EIO_BUSY(3)								 1							       EIO_BUSY(3)

eio_busy - Artificially increase load. Could be useful in tests, benchmarking.

SYNOPSIS
       resource eio_busy (int  $delay, [int  $pri = EIO_PRI_DEFAULT], [callable  $callback = NULL], [mixed  $data = NULL])

DESCRIPTION
       eio_busy(3) artificially increases load taking $delay seconds to execute. May be used for debugging, or benchmarking.

PARAMETERS
	      o $delay
		- Delay in seconds

	      o $pri
		-The  request  priority:  EIO_PRI_DEFAULT,  EIO_PRI_MIN,  EIO_PRI_MAX,	or  NULL.  If  NULL  passed,  $pri  internally	is  set to
		EIO_PRI_DEFAULT.

	      o $callback
		- This callback is called when all the group requests are done.

	      o $data
		- Arbitrary variable passed to $callback.

RETURN VALUES
       eio_busy(3) returns request resource on success or FALSE on error.

SEE ALSO eio_nop.
PHP Documentation Group 													       EIO_BUSY(3)