GWT 2.7 SuperDevMode Compile Times

Hi all,

I've been working on an enterprise GWT app for the last few years. It has grown and will grow quite a bit and compile times (DevMode, SuperDevMode) are becoming a real pain point for the developers.

A SuperDevMode initial compile takes about 50sec with GWT2.7/Java7 on a 2.6GHz i7 Macbook Pro when SuperDevMode starts. Even a simple change of just a label takes 5sec as reported by GWT plugin on refresh. Performance is  worse on Windows machines.

As suggested in many examples, there we use a  Dev profile/.gwt.xml with only one permutation, draft compile and optimizationLevel=0. SDM has 3GB heap size. Client and Server code are in one Maven module with quite a few libraries (server side). We use an exploded but doubt that would affect the GWT compile times.

Are there any other optimisations I can try or this this the kind of performance during development we have to live with? 

GWT code splitting sounds like the compiler/linker have to do more work analysing execution paths, so I doubt it would improve things - obviously it would require some code changes as well which we haven't tried.

Thanks

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