Take a minute to start

[SeakyLuo]

Hi, after adding opentelemetry-javaagent.jar to the init command, it takes a minute longer to start the jvm. What are possible causes for that and how can I analyze and reduce the slow start? It doesn't seem to vary much between servers of different configs, so I think there might be some network issue during the startup? But it did report trace.

nohup java -javaagent:"$workspace"/AliyunJavaAgent/aliyun-java-agent.jar \
           -Dmse.licenseKey="$licenseKey" \
           -Dmse.appName="$appKey" \
           -Dprofiler.micro.service.mse.version=pro \
           -Dmse.namespace="$profile" \
           -Dmse.enable=true \
           -javaagent:"$workspace"/opentelemetry-javaagent.jar \
           -Dotel.resource.attributes=service.name="$trace_service_name",service.version=v1.0.0,deployment.environment="$profile" \
           -Dotel.exporter.otlp.protocol=http/protobuf \
           -Dotel.exporter.otlp.traces.endpoint=http://tracing-analysis-dc-hz-internal.aliyuncs.com/xxx \
           -Dotel.exporter.otlp.metrics.endpoint=http://tracing-analysis-dc-hz-internal.aliyuncs.com/xxx \
           -Dotel.logs.exporter=none \
           -jar "$jar_file" --spring.profiles.active="$profile" > "$workspace"/project.log 2>&1 &

[steverao]

after adding opentelemetry-javaagent.jar to the init command, it takes a minute longer to start the jvm

Without the java agent, how long does it take on average? BTW, how do you measure the time to start the jvm?

What are possible causes for that and how can I analyze and reduce the slow start?

From the information you provided, you used two java agents, it might increases start time. BTW, you used the Java Agent from Aliyun, as far as I know, it also provide observability ability in their java agent, for detail, you can ask for help from related cloud service provider.

[laurit]

You could use your favourite profiling tool and see if you can discover where the time is spent while your application is starting.

[laurit]

Also test your application with only the otel agent to rule out that the issue is caused by running with 2 agents.

[github-actions]

This has been automatically marked as stale because it has been marked as needing author feedback and has not had any activity for 7 days. It will be closed automatically if there is no response from the author within 7 additional days from this comment.

[jeanbisutti]

@SeakyLuo You seem to have a Spring application. You could try replace the OTel Java agent by the OTel Spring starter.