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Startup performance for JVM based apps #63

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Startup performance for JVM based apps #63

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a33256c
increasing resources limits and limiting heap size due to the fact ja…
paolocarta Aug 14, 2018
f18d09b
improving performance
paolocarta Aug 14, 2018
261b887
moving env variables to kubernetes manifest
paolocarta Aug 15, 2018
0620019
adding experimental jvm features
paolocarta Aug 26, 2018
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2 changes: 1 addition & 1 deletion packs/gradle/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -3,4 +3,4 @@ ENV PORT 8080
EXPOSE 8080
COPY build/libs/*.jar /opt/app.jar
WORKDIR /opt
CMD ["java", "-jar", "app.jar"]
ENTRYPOINT exec java -Xms256m -Xmx256m -XX:MaxMetaspaceSize=128m $JAVA_OPTS -jar app.jar
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@paolocarta paolocarta Aug 14, 2018 •
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Java 8 is not docker aware, therefore this is a workaround in order to limit heap expansion.

From my local tests I can see that a simple demo spring boot app requires around 150-200 MB of Heap.

6 changes: 3 additions & 3 deletions packs/gradle/charts/values.yaml
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Expand Up @@ -16,10 +16,10 @@ service:
fabric8.io/ingress.annotations: "kubernetes.io/ingress.class: nginx"
resources:
limits:
cpu: 500m
memory: 512Mi
cpu: 1800m
memory: 768Mi
requests:
cpu: 400m
cpu: 600m
memory: 512Mi
probePath: /actuator/health
livenessProbe:
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3 changes: 2 additions & 1 deletion packs/maven/Dockerfile
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Expand Up @@ -11,4 +11,5 @@ COPY pom.xml target/lib* /opt/lib/
# we could do with a better way to know the name - or to always create an app.jar or something
COPY target/*.jar /opt/app.jar
WORKDIR /opt
CMD ["java", "-jar", "app.jar"]

ENTRYPOINT exec java -Xms256m -Xmx256m -XX:MaxMetaspaceSize=128m $JAVA_OPTS -jar app.jar
6 changes: 3 additions & 3 deletions packs/maven/charts/values.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,10 @@ service:
fabric8.io/ingress.annotations: "kubernetes.io/ingress.class: nginx"
resources:
limits:
cpu: 500m
memory: 512Mi
cpu: 1800m
memory: 768Mi
requests:
cpu: 400m
cpu: 600m
memory: 512Mi
probePath: /actuator/health
livenessProbe:
Expand Down