Add options for local reproducer

build.gradle

@@ -194,7 +194,7 @@ subprojects {
     }
     //Required for building on Travis' container-based infrastructure to not be killed with
     //'exit code 137' - https://github.com/travis-ci/travis-ci/issues/5582
-    jvmArgs '-Xmx512m'
+    jvmArgs '-Xmx512m', '-XX:ActiveProcessorCount=4', '-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005'
     // As a generous general timeout, instead of the 6h of GHA.
     timeout = Duration.ofMinutes(15)
   }