Profile JVM applicationsλ︎

Profile applications on the JVM, visualising memory and CPU resources, identifying bottlenecks and areas of the code to review to optimise a running application.

Using FlameGraphs To Illuminate The JVM A Simple Approach to the Advanced JVM Profiling

VisualVMλ︎

VisualVM provides a simplified and robust profiling tool for Java applications, bundled with the Java Development Kit (JDK) and using JConsole, jstat, jstack, jinfo, and jmap.

UbuntuMacOSX

Ubuntu / Debian includes VisualVM in the software center

sudo apt install visualvm

Download the macOS application bundle and double-click to install.

JDK Flight Recorderλ︎

JDK Flight Recorder is a production time profiling and diagnostics engine built into the JVM

Extremely low overhead - no measurable impact on the running application
High performance flight recording engine and high performance data collection
Safe and reliable in production, tested on all platforms as part of the JVM/JDK-testing
Time machine records data before, up to, and right after a problem occurs (even if the JVM process crashes)

jcmd to access the flight recorder data from the command line

Mission control provides a graphical tool to visualise flight recorder data.

Mission Controlλ︎

Mission Control is an open source desktop tool for visualising production time profiling and diagnostics from the JDK flight recorder tool. JDK Mission Control supports OpenJDK 11 and above.

JDK Mission Control consists of