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

• jps
• jcmd
• jmap
• jstack
• jstat
• jinfo

OpenJ9 Support

openj9/tools/attach/diagnostics/tools

• jps
• jcmd
• jmap
• jstack
• jstat