[noselasd]

Every single thing I have measured(which, granted, does not cover that much), openjdk comes out way ahead of gcj in terms of speed.

Similarly, running eclipse under gcj is not something you want to do, it becomes slow.

[mraleph]

You should try Excelsior JET compiled Eclipse then.

(see: http://www.excelsior-usa.com/)

[disclaimer: I've worked for Excelsior LLC back then when initial support for AOT compilation of Eclipse was implemented]