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jattacher

A utility to diagnostics JVM processes using the Dynamic Attach mechanism.

It is a Rust implementation of the HotSpotVirtualMachine and OpenJ9VirtualMachine from the tools.jar of the JDK. However, No installed JDK required, works with just JRE.

Features

  • jattacher jps —— List all Java processes along with comprehensive process information, going beyond the default JPS output provided by OpenJ9 and HotSpot.
  • jattacher jps --json —— Output data in JSON format.
  • jattacher jps --dashboard —— Display Java process information in real time.

HotSpot Support

sun/tools

OpenJ9 Support

openj9/tools/attach/diagnostics/tools