How to increase Sonar java heap size?

Question

I am analyzing quite a large project with Sonar. The first few runs went OK but now I get error. Something to do with timemachine and violation analyzer:

java.lang.OutOfMemoryError: GC overhead limit exceeded
at 
org.sonar.plugins.core.timemachine.ViolationTrackingDecorator.mapViolations(ViolationTrackingDecorator.java:131)
    at org.sonar.plugins.core.timemachine.ViolationTrackingDecorator.decorate(ViolationTrackingDecorator.java:70)

I execute Sonar using ANT. Can I increase the java heap size somehow?

Answer 1

The Sonar ANT task executes as part of ANT so you need to set the JVM heap using the standard ANT environment parameter. For example:

export ANT_OPTS=-Xmx256m