From: dmertz@... (denis)
Date: 2004-05-25T21:03:42+09:00
Subject: Re: make faster Richards benchmark

Nice that we are now faster than python, but there is still room for
small improvements.
You can find my version here: 

http://flwrpwr.free.fr/Ruby/bench/bench27.rb

It is based on version #26 of the ruby OO bench, with the following
changes:

* precompile  the isHeldOrSuspended? expression  (this gives the
largest speed gain)
* use   
   @state |= x 
instead of 
   @state = @state | x   
(it is slightly faster)
* remove unneeded temporary variables and unused return values
* rewrite some conditionals in a more rubyish way (and more efficient)
* make better use of conditionals return value (eg like in Tcb.run)
* use symbols to represent packet kind. (this is more a style change,
speed is unchanged)
* in WorkerTask.run, use collect! to change the content of packet.a2

The speed gain between my version and #26 is approximatelly the same
as between #26 and #25.


Bye bye 

Denis