system being alegedly x times faster, taking x times less ressources etc. etc.

I guess they would have achieved the same overall effect migrating from perl to perl, i.e. refactoring for 2 years... which endeavour would probably have reduced that 550 kLOC, who knows - hard to tell not knowing what the perl code looked like.

So it is hard impossible to tell (and misleading doing so) how great the net benefit of porting to java has been in terms of performance and resources. The biggest benefit clearly is having a unified code base and a single programming language.

update: s/hard/impssible/

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}