No subject

I have no measurements how much does it speed up the build (if at all);
I think at some stage I got to a number like >20% speedup, but who
knows, my build takes something like 20 hours, so I am not patient
enough to really test it ;-)

More info:

http://artax.karlin.mff.cuni.cz/~kendy/blog/archives/permalinks/2011-04-15T17_01_41.html
http://artax.karlin.mff.cuni.cz/~kendy/blog/archives/permalinks/2007-07-02T18_26_56.html

Enjoy,
Kendy