diff --git a/bin/benchmark-worker b/bin/benchmark-worker
index 64050121..5acd43e3 100755
--- a/bin/benchmark-worker
+++ b/bin/benchmark-worker
@@ -30,7 +30,7 @@ fi
 
 if [ -z "$HEAP_OPTS" ]
 then
-    HEAP_OPTS="-Xms4G -Xmx8G"
+    HEAP_OPTS="-XX:InitialRAMPercentage=40.0 -XX:MaxRAMPercentage=80.0 -XX:+UseG1GC -XX:MaxGCPauseMillis=10 -XX:+ParallelRefProcEnabled -XX:+UnlockExperimentalVMOptions -XX:+AggressiveOpts -XX:+DoEscapeAnalysis -XX:ParallelGCThreads=32 -XX:ConcGCThreads=32 -XX:G1NewSizePercent=50 -XX:+DisableExplicitGC -XX:-ResizePLAB -XX:+PerfDisableSharedMem -XX:+AlwaysPreTouch -XX:-UseBiasedLocking"
 fi
 
 KAFKA_JMX_OPTS="-Dcom.sun.management.jmxremote.port=9999 -Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=0.0.0.0 -Djava.net.preferIPv4Stack=true"