Why are ConcurrentSkipListSet ascending Iterators 'faster' than descending ones? : <p>I’m using the descendingIterator method on ConcurrentSkipListSet. I’ve just checked the documentation and noticed the following comment:</p>

<p>‘Ascending ordered views and their iterators are faster than descending ones.’ </p>

<p>See <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#descendingIterator--" rel="noreferrer">https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#descendingIterator--</a></p>

<p>Unfortunately it doesn’t provide any more information on this. What kind of performance difference is there? is it significant? and why is there a performance difference?</p>
