Or, as the JVM runs garbage collection to free up memory, it could create excessively long pauses in application activity that translate into a slow experience for your users. Datadog has been recognized as a Leader in the Gartner Magic Quadrant for APM and Observability Get the full report End-to-end application performance monitoring Follow requests from RUM sessions to services, serverless functions, and databases View traces and logs in context with automatic trace_id injection If your application exposes JMX metrics, a lightweight Java plugin named JMXFetch (only compatible with Java >= 1.7.) If you notice that your application is spending more time in garbage collection, or heap usage is continually rising even after each garbage collection, you can consult the logs for more information. For advanced usage, check out the configuration reference and custom instrumentation API. This can lead the JVM to run a full garbage collection (even if it has enough memory to allocate across disparate regions) if that is the only way it can free up the necessary number of continuous regions for storing each humongous object. In the log stream below, it looks like the G1 garbage collector did not have enough heap memory available to continue the marking cycle (concurrent-mark-abort), so it had to run a full garbage collection (Full GC Allocation Failure). You can also correlate the percentage of time spent in garbage collection with heap usage by graphing them on the same dashboard, as shown below. In Datadog terminology this library is called a Tracer. To set up Datadog APM in AWS Lambda, see the Tracing Serverless Functions documentation. As of version 0.29.0, Datadogs Java client will automatically collect JVM runtime metrics so you can get deeper context around your Java traces and application performance data. If you use jetty.sh to start Jetty as a service, edit it to add: If you use start.ini to start Jetty, add the following line (under --exec, or add --exec line if it isnt there yet): For additional details and options, see the WebSphere docs. A remote connection is required for the Datadog Agent to connect to the JVM, even when the two are on the same host. Register for the Container Report Livestream, Instrumenting with Datadog Tracing Libraries. You need comprehensive visibility across your application and its JVM runtime environment in order to effectively troubleshoot out-of-memory errorsand to detect memory managementrelated issues before those errors even occur. Code Hotspots and more. If the socket does not exist, then stats are sent to http://localhost:8125. young garbage collections, which evacuate live objects from eden to survivor regions or survivor to old regions, a marking cycle, which involves taking inventory of live objects in old-generation regions. In addition to automatic instrumentation, the @Trace annotation, and dd.trace.methods configurations , you can customize your observability by programmatically creating spans around any block of code. The following is an example for the Python Tracer, assuming 172.17.0.1 is the default route: Additional helpful documentation, links, and articles: Our friendly, knowledgeable solutions engineers are here to help! Setup Metric collection If your application exposes JMX metrics, a lightweight Java plugin named JMXFetch (only compatible with Java >= 1.7.) Datadog APMs detailed service-level overviews display key performance indicatorsrequest throughput, latency, and errorsthat you can correlate with JVM runtime metrics. Improve application latency and optimize compute resources with always-on production profiling to pinpoint the lines of code consuming the most CPU, memory, or I/O. The Java integration allows you to collect metrics, traces, and logs from your Java application. Java JVM 7 , Datadog Java () . Read, Register for the Container Report Livestream, Instrumenting with Datadog Tracing Libraries, DD_TRACE_AGENT_URL=http://custom-hostname:1234, DD_TRACE_AGENT_URL=unix:///var/run/datadog/apm.socket, java -javaagent:.jar -jar .jar, wget -O dd-java-agent.jar https://dtdg.co/latest-java-tracer, java -javaagent:/path/to/dd-java-agent.jar -Ddd.profiling.enabled=true -XX:FlightRecorderOptions=stackdepth=256 -Ddd.logs.injection=true -Ddd.service=my-app -Ddd.env=staging -Ddd.version=1.0 -jar path/to/your/app.jar, JAVA_OPTS=-javaagent:/path/to/dd-java-agent.jar, CATALINA_OPTS="$CATALINA_OPTS -javaagent:/path/to/dd-java-agent.jar", set CATALINA_OPTS=%CATALINA_OPTS% -javaagent:"c:\path\to\dd-java-agent.jar", JAVA_OPTS="$JAVA_OPTS -javaagent:/path/to/dd-java-agent.jar", set "JAVA_OPTS=%JAVA_OPTS% -javaagent:X:/path/to/dd-java-agent.jar",