optimize the surefire JVM
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<releaseProfiles> </releaseProfiles>
<arguments> </arguments>
- <argLine>-Xmx768M -Djava.awt.headless=true</argLine>
+ <argLine>-Xms768M -Xmx768M -Djava.awt.headless=true -XX:+HeapDumpOnOutOfMemoryError -XX:+TieredCompilation -XX:TieredStopAtLevel=1</argLine>
<jenkins.version>2.138.4</jenkins.version>
<!-- Should only need to override these if using timestamped snapshots (but better to use Incrementals instead): -->
<jenkins-core.version>${jenkins.version}</jenkins-core.version>
