diff --git a/start-onos-embedded.sh b/start-onos-embedded.sh
index 5da4d9b..dac0331 100755
--- a/start-onos-embedded.sh
+++ b/start-onos-embedded.sh
@@ -14,9 +14,14 @@
 JVM_OPTS=""
 JVM_OPTS="$JVM_OPTS -server -d64"
 JVM_OPTS="$JVM_OPTS -Xmx2g -Xms2g -Xmn800m"
-JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
+#JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
+JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC -XX:+UseAdaptiveSizePolicy -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
 JVM_OPTS="$JVM_OPTS -XX:MaxInlineSize=8192 -XX:FreqInlineSize=8192"
 JVM_OPTS="$JVM_OPTS -XX:CompileThreshold=1500 -XX:PreBlockSpin=8 \
+		-XX:+UseThreadPriorities \
+		-XX:ThreadPriorityPolicy=42 \
+                 -XX:+UseCompressedOops \
+		-Dcassandra.compaction.priority=1 \
             -Dcom.sun.management.jmxremote.port=7199 \
               -Dcom.sun.management.jmxremote.ssl=false \
               -Dcom.sun.management.jmxremote.authenticate=false"
diff --git a/start-onos.sh b/start-onos.sh
index 667fd31..f140c84 100755
--- a/start-onos.sh
+++ b/start-onos.sh
@@ -16,11 +16,18 @@
 #JVM_OPTS="$JVM_OPTS -Xmx2g -Xms2g -Xmn800m"
 JVM_OPTS="$JVM_OPTS -Xmx1g -Xms1g -Xmn800m"
 #JVM_OPTS="$JVM_OPTS -XX:+UseParallelGC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
-JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
+JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC -XX:+UseAdaptiveSizePolicy -XX:+AggressiveOpts -XX:+UseFastAccessorMethods"
 JVM_OPTS="$JVM_OPTS -XX:MaxInlineSize=8192 -XX:FreqInlineSize=8192"
 JVM_OPTS="$JVM_OPTS -XX:CompileThreshold=1500 -XX:PreBlockSpin=8"
 JVM_OPTS="$JVM_OPTS -XX:OnError=crash-logger" ;# For dumping core
 #JVM_OPTS="$JVM_OPTS -Dpython.security.respectJavaAccessibility=false"
+JVM_OPTS="$JVM_OPTS -XX:CompileThreshold=1500 -XX:PreBlockSpin=8 \
+		-XX:+UseThreadPriorities \
+		-XX:ThreadPriorityPolicy=42 \
+                 -XX:+UseCompressedOops \
+            -Dcom.sun.management.jmxremote.port=7189 \
+              -Dcom.sun.management.jmxremote.ssl=false \
+              -Dcom.sun.management.jmxremote.authenticate=false"
 
 # Set ONOS core main class
 MAIN_CLASS="net.onrc.onos.ofcontroller.core.Main"