Dockerized example with warmup

Signed-off-by: Daniel Kec <daniel.kec@oracle.com>

examples/crac/Dockerfile.crac

@@ -23,8 +23,11 @@ ENV JDK_NAME=zulu22.30.13-ca-crac-jdk22.0.1-linux_x64
 ENV JAVA_HOME=/usr/share/$JDK_NAME
 ENV CR_DIR=${CONT_IMG_VER:-/crac-checkpoint/cr}
 
+# Install wrk
+RUN microdnf -y update && microdnf -y install perl wget tar gzip curl git openssl-devel
+RUN git clone https://github.com/wg/wrk.git && cd wrk && make && cp wrk /usr/local/bin/
+
 # Install CRaC
-RUN microdnf -y update && microdnf -y install wget tar gzip
 RUN wget -O crac-jdk.tar.gz "https://cdn.azul.com/zulu/bin/${JDK_NAME}.tar.gz"
 RUN tar zxf ./crac-jdk.tar.gz -C /usr/share && ln -s $JAVA_HOME/bin/java /bin/
 RUN ln -s $JAVA_HOME/bin/jcmd /bin/ && ln -s $JAVA_HOME/bin/jps /bin/
@@ -35,7 +38,9 @@ WORKDIR /helidon
 ADD target/*.jar .
 ADD target/libs libs
 ADD runtimeCRaC.sh .
-RUN chmod +x ./runtimeCRaC.sh
+ADD warmUp.sh .
+ADD measure.sh .
+RUN chmod +x ./*.sh
 
 CMD ["sh","./runtimeCRaC.sh"]
 

examples/crac/README.md

@@ -8,7 +8,7 @@ therefore CRaC checkpoint needs to be created in runtime.
 
 ```bash
 mvn clean package
-docker build --build-arg CR_DIR=~/cr -t crac-helloworld . -f Dockerfile.crac
+docker build -t crac-helloworld . -f Dockerfile.crac
 # First time ran, checkpoint is created, stop with Ctrl-C
 docker run --privileged --network host --name crac-helloworld crac-helloworld
 # Second time starting from checkpoint, stop with Ctrl-C

examples/crac/measure.sh

@@ -0,0 +1,21 @@
+#!/bin/bash -e
+
+#
+# Copyright (c) 2024 Oracle and/or its affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+curl --retry 10 --retry-all-errors --retry-delay 1 http://localhost:7001
+printf "\nMeasuring ..."
+wrk -c 16 -t 16 -d 10s http://localhost:7001

examples/crac/runtimeCRaC.sh

@@ -28,18 +28,20 @@ then
     ldd --version | grep ldd
     # Workaround for https://github.com/checkpoint-restore/criu/issues/1696
     # see https://github.com/checkpoint-restore/criu/pull/1706
-    export GLIBC_TUNABLES=glibc.pthread.rseq=0
+    # export GLIBC_TUNABLES=glibc.pthread.rseq=0
 
     echo "=== Pre-starting Helidon MP app ==="
 	  set +e
 	  mkdir -p "/crac-checkpoint/cr"
-    $JAVA_HOME/bin/java -XX:CRaCCheckpointTo=/crac-checkpoint/cr -jar ./*.jar
+	  ./warmUp.sh &
+    $JAVA_HOME/bin/java -XX:CRaCCheckpointTo=$CR_DIR -jar ./*.jar
     set -e
 
     echo "=== CRaC checkpoint created, checking log dump for errors ==="
     cat $CR_DIR/dump*.log | grep "Warn\|Err\|succ"
 else
 echo "==== Starting directly from CRaC checkpoint ===="
+./measure.sh &
 exec $JAVA_HOME/bin/java -XX:CRaCRestoreFrom=$CR_DIR
 fi
 

examples/crac/warmUp.sh

@@ -0,0 +1,25 @@
+#!/bin/bash -e
+
+#
+# Copyright (c) 2024 Oracle and/or its affiliates.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+
+curl --retry 10 --retry-all-errors --retry-delay 1 http://localhost:7001
+printf "\n==== Warming up ...\n"
+wrk -c 16 -t 16 -d 10s http://localhost:7001
+printf "\n==== Warmup complete, creating checkpoint\n"
+jcmd helidon-examples-microprofile-hello-world-implicit.jar JDK.checkpoint
+#kill $(jps | grep jar | awk '{print $1}')