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My Grails application is running in a development environment. I still didn’t go into production, but in any case, is it normal that my Grails application is requiring 230 MB at startup only (with an empty bootstrap and no request handled so far)?
Do you know why this is the case, how to improve memory usage in development mode and, most important, whether it is reduced in production environment?
To answer your questions, yes – it is normal. It’s especially normal if you have a lot GSPs in your application. GSPs are runtime compiled so you can speed up their generation by increasing your permgen space.
You can improve memory use and performance in general by making sure that you are passing the ‘-server’ flag when you load your server JVM.