s exceeded,
throttling proceeds by adding a wait to any thread which calls the
event-post! procedure, equal to the cube of the number of times (if
any) by which the number of queued tasks exceeds the threshold
multiplied by the value of &rsquo;throttle-delay&rsquo;.  The value of
&rsquo;throttle-delay&rsquo; should be given in microseconds.  Throttling is only
applied where the call to event-post! is made in a thread other than
the one in which the event loop runs.
</p>
<p>So if the threshold given is 10000