diff a/run-dacapo.sh b/run-dacapo.sh
--- /dev/null
+++ b/run-dacapo.sh
@@ -0,0 +1,85 @@
+#!/bin/bash
+
+# Run with e.g. ./run-dacapo.sh fop -n 400
+
+set -euo pipefail
+
+# Look around for release JDK image
+J_HP=
+if [ -d build/linux-x86_64-server-release/images/jdk/ ]; then
+  J_HP=build/linux-x86_64-server-release/images/jdk/bin/java
+elif [ -d build/linux-aarch64-server-release/images/jdk/ ]; then
+  J_HP=build/linux-aarch64-server-release/images/jdk/bin/java
+else
+  echo "Cannot find JDK"
+  exit 1
+fi
+
+J_ML=
+if [ -d jdk-mainline/ ]; then
+  J_ML=jdk-mainline/bin/java
+fi
+
+DACAPO=dacapo
+if [ ! -d $DACAPO ]; then
+  echo "Download Dacapo to $DACAPO"
+  exit 1
+fi
+W="-jar $DACAPO/dacapo-23.11-MR2-chopin.jar $*"
+
+OPTS="-XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions"
+
+# Only C2, only COH
+OPTS="$OPTS -XX:-TieredCompilation -XX:+UseCompactObjectHeaders -XX:+UseCompressedOops"
+
+# Heap config
+OPTS="$OPTS -Xmx10g -Xms10g -XX:+UseTransparentHugePages -XX:+AlwaysPreTouch"
+
+# GC config
+OPTS="$OPTS -XX:+UseShenandoahGC"
+
+# Mitigate code cache effects
+OPTS="$OPTS -XX:ReservedCodeCacheSize=256M"
+
+OPTS_PASSIVE_NONE="$OPTS -XX:ShenandoahGCMode=passive"
+OPTS_PASSIVE_ALL="$OPTS_PASSIVE_NONE -XX:+ShenandoahLoadRefBarrier -XX:+ShenandoahSATBBarrier -XX:+ShenandoahCASBarrier -XX:+ShenandoahCloneBarrier"
+
+run_with() {
+  P=$*
+  for I in `seq 1 3`; do
+    echo -n " run $I: "
+    $P $W 2>&1 | awk '/completed warmup|PASSED/ { printf "%s ", $(NF-2)} END { print "" }'
+  done
+}
+
+echo
+echo ------
+echo $*
+
+echo
+echo "Hotpatching: Concurrent"
+run_with $J_HP $OPTS
+
+#echo
+#echo "Hotpatching: Passive, No barriers"
+#run_with $J_HP $OPTS_PASSIVE_NONE
+
+#echo
+#echo "Hotpatching: Passive, All barriers"
+#run_with $J_HP $OPTS_PASSIVE_ALL
+
+if [ "x" != "x$J_ML" ]; then
+  echo
+  echo "Mainline: Concurrent"
+  run_with $J_ML $OPTS
+
+#  echo
+#  echo "Mainline: Passive, No barriers"
+#  run_with $J_ML $OPTS_PASSIVE_NONE
+
+#  echo
+#  echo "Mainline: Passive, All barriers"
+#  run_with $J_ML $OPTS_PASSIVE_ALL
+fi
+
+