Native Memory Agent

Java agent to send native memory metrics to StatsD using UDP, every 5 seconds.

Build

mvn clean package

Release

/opt/maven/apache-maven-3.9.2/bin/mvn release:prepare
/opt/maven/apache-maven-3.9.2/bin/mvn release:perform -Darguments="-Dmaven.deploy.skip=true"

Usage

wget https://docs.oracle.com/javase/tutorial/networking/sockets/examples/EchoServer.java
nc -l -u -p 8125
java -javaagent:target/native-memory-agent-1.0.jar=localhost:8125,foo=bar \
  -XX:NativeMemoryTracking=summary \
  EchoServer.java 8080

• -XX:NativeMemoryTracking=summary or -XX:NativeMemoryTracking=detail is required to active native memory tracking
• localhost:8125 is the address for a UDP StatsD server
• foo=bar are tags to be sent along with metrics, delimted by a comma

Acknowledgements

• The story of a Java 17 native memory leak