To combine the JVM configuration and IDE configuration points, out of the box on a new 16GB Macbook Pro Retina, Intellij (at least, as PHPStorm) will spend an e

To combine the JVM configuration and IDE configuration points, out of the box on a new 16GB Macbook Pro Retina, Intellij (at least, as PHPStorm) will spend an enormous amount of time unresponsive at startup and periodically thereafter. Why? Because of two things: the default JVM settings it ships with starve it of resources, and the default validation settings have it trying to check everything under the sun. There's also the initial indexing, but I can live with that, since it enables beautifully fast jump-to-definition, which is hard to live without.