/* If we have passed the queue update time, we must do a full
scan of the queue, checking for new arrivals, etc. This will
as a by-product set the count of items for use by the stripchart
/* If we have passed the queue update time, we must do a full
scan of the queue, checking for new arrivals, etc. This will
as a by-product set the count of items for use by the stripchart