When this is set to a non-zero value, the main Squid process
	sleeps the specified number of microseconds after a fork()
	system call. This sleep may help the situation where your
	system reports fork() failures due to lack of (virtual)
	memory. Note, however, if you have a lot of child
	processes, these sleep delays will add up and your
	Squid will not service requests for some amount of time
	until all the child processes have been started.
	On Windows value less then 1000 (1 milliseconds) are
	rounded to 1000.