Btw Razor CAN be multithreaded but externally, plzip could invoke (de)compress copy of RZ function for each block processed(probably spawn new instance for each), this can be also done with 4x4 btw I just dont know if it work without stdio.

btw as i see your tests, you can also add tolerance on entropy, lets say 99% is the default, but you can make it user specified

So, here is it:
http://fileforums.com/showthread.php...613#post469613