diff --git a/test/kubemark/start-kubemark-master.sh b/test/kubemark/start-kubemark-master.sh
index 338d12e5431..dd5eb6838f4 100644
--- a/test/kubemark/start-kubemark-master.sh
+++ b/test/kubemark/start-kubemark-master.sh
@@ -18,6 +18,7 @@
 
 EVENT_STORE_IP=$1
 EVENT_STORE_URL="http://${EVENT_STORE_IP}:4002"
+NUM_NODES=$2
 if [ "${EVENT_STORE_IP}" == "127.0.0.1" ]; then
 	sudo docker run --net=host -d gcr.io/google_containers/etcd:2.2.1 /usr/local/bin/etcd \
 		--listen-peer-urls http://127.0.0.1:2381 \
@@ -49,6 +50,7 @@ kubernetes/server/bin/kube-apiserver \
 	--token-auth-file=/srv/kubernetes/known_tokens.csv \
 	--secure-port=443 \
 	--basic-auth-file=/srv/kubernetes/basic_auth.csv \
+	--target-ram-mb=$((${NUM_NODES} * 60)) \
 	$(cat apiserver_flags) &> /var/log/kube-apiserver.log &
 
 # kube-contoller-manager now needs running kube-api server to actually start
diff --git a/test/kubemark/start-kubemark.sh b/test/kubemark/start-kubemark.sh
index dd29c9c9659..60f534f1af0 100755
--- a/test/kubemark/start-kubemark.sh
+++ b/test/kubemark/start-kubemark.sh
@@ -188,7 +188,7 @@ else
 fi
 
 gcloud compute ssh "${MASTER_NAME}" --zone="${ZONE}" --project="${PROJECT}" \
-  --command="chmod a+x configure-kubectl.sh && chmod a+x start-kubemark-master.sh && sudo ./start-kubemark-master.sh ${EVENT_STORE_IP:-127.0.0.1}"
+  --command="chmod a+x configure-kubectl.sh && chmod a+x start-kubemark-master.sh && sudo ./start-kubemark-master.sh ${EVENT_STORE_IP:-127.0.0.1} ${NUM_NODES:-0}"
 
 # create kubeconfig for Kubelet:
 KUBECONFIG_CONTENTS=$(echo "apiVersion: v1