Add required options to enable Tiered Compilation.
* Enlarging Code Cache as it tend to exhaust with ONOS code base
diff --git a/start-onos.sh b/start-onos.sh
index b1fed60..899cd34 100755
--- a/start-onos.sh
+++ b/start-onos.sh
@@ -19,6 +19,7 @@
 ## If you want JaCoCo Code Coverage reports... uncomment line below
 #JVM_OPTS="$JVM_OPTS -javaagent:${ONOS_HOME}/lib/jacocoagent.jar=dumponexit=true,output=file,destfile=${LOGDIR}/jacoco.exec"
 JVM_OPTS="$JVM_OPTS -server -d64"
+#JVM_OPTS="$JVM_OPTS -XX:+TieredCompilation -XX:InitialCodeCacheSize=512m -XX:ReservedCodeCacheSize=512m"
 #JVM_OPTS="$JVM_OPTS -Xmx2g -Xms2g -Xmn800m"
 JVM_OPTS="$JVM_OPTS -Xmx1g -Xms1g -Xmn800m"
 #JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"