Out of memory in PlayFramework 2.0

Question

How do I increase the memory available to the Play environment? I am running out of memory after a time while running tests.

In particular, I get this error:

java.lang.OutOfMemoryError: PermGen space

Answer 1

By setting the environment variable "_JAVA_OPTIONS", you can pass in variables that play/sbt will use during normal use. I found that this helped me avoid PermGen space errors when running my dev and tests.

For example:

export _JAVA_OPTIONS="-Xms64m -Xmx1024m -Xss2m -XX:MaxPermSize=256m"

Answer 2

I solved this problem by adding:

javaOptions ++= Seq("-Xmx2048M", "-Xms512M", "-XX:MaxPermSize=2048M")

in Build.scala to the settings.