JPProf

JPProf brings go pprof tooling to the Java world.

The library implements an http handler that can serve runtime profiling data in the format expected by the pprof visualization tool.

Usage

For now the library only support basic http handler so you can either plug the handler in your server or start a new one as below:

import java.net.InetSocketAddress;
import com.sun.net.httpserver.HttpServer;
import jpprof.PprofHttpHandler;

public class Main {
    public static void main(String[] args) throws Exception {
        var server = HttpServer.create(new InetSocketAddress(4001), 0);
        server.createContext("/", new PprofHttpHandler());
        server.start();
    }

}

Once the handler is setup you can directly use go tool to fetch CPU profile.

go tool pprof -http :6060 http://localhost:4001/debug/pprof/profile\?seconds\=10

Currently the library only supports CPU profiling.