Jmc java mission control
2 JDK Mission Control
JDK Mission Control (JMC) is a production-time profiling and diagnostics tool. It includes tools to monitor and manage your Java application with a very small performance overhead, and is suitable for monitoring applications running in production.
JMC is not part of the regular JDK installation. For more information on JMC downloads and documentation, see JDK Mission Control Page.
- JVM Browser shows running Java applications and their JVMs.
- JMX Console is a mechanism for monitoring and managing JVMs. It connects to a running JVM, collects, displays its characteristics in real time, and enables you to change some of its runtime properties through Managed Beans (MBeans). You can also create rules that trigger on certain events (for example, send an e-mail if the CPU usage by the application reaches 90 percent).
- Flight Recorder (JFR) is a tool for collecting diagnostic and profiling data about a running Java application. It is integrated into the JVM and causes very small performance overhead, so it can be used in production environments. JFR continuously saves large amounts of data about the running applications. This profiling information includes thread samples, lock profiles, and garbage collection details. JFR presents diagnostic information in logically grouped tables and charts. It enables you to select the range of time and level of detail necessary to focus on the problem. Data collected by JFR can be essential when contacting Oracle support to help diagnose issues with your Java application.
- Plug-ins help in heap dump analysis and DTrace recording. See Plug-in Details. JMC plug-ins connect to a JVM using the Java Management Extensions (JMX) agent. For more information about JMX, see the Java Platform, Standard Edition Java Management Extensions Guide .
JMC 8.3.1 General-Availability Release
JDK Mission Control (JMC) is an advanced set of tools for managing, monitoring, profiling, and troubleshooting Java applications. JMC enables efficient and detailed data analysis for areas such as code performance, memory, and latency without introducing the performance overhead normally associated with profiling and monitoring tools.
JDK Mission Control version 8.3.1 (JMC 8) is now available for download. JMC 8 delivers a new dependency view, heatmap view, websocket server to access JFR Stack Trace, flame graph view, enhanced Rules API along with other improvements to functionality and usability. JMC 8 supersedes JMC 7, all JMC 7 users and any remaining JMC 5 users should upgrade to this new version. JMC 8 is now able to analyze recordings from JDK 7 and above. For further details refer to JMC 8 OpenJDK Project Page
Documentation
These core libraries packaged along with JMC can be used for parsing, processing, and doing automated analysis of Java Flight Recorder (JFR) files. These libraries are available on Maven Central enabling automated project builds for developers creating their own parsing and visualization tools for analyzing JFR recordings.
Build 5 (2023/2/28): General-Availability Release
These General Availability, open-source builds are provided under the Universal Permissive License, version 1.0.
Linux / x64 tar.gz (sha256) 94016053 macOS / AArch64 tar.gz (sha256) 97427604 macOS / x64 tar.gz (sha256) 97407526 Windows / x64 zip (sha256) 95673368
Notes
Feedback
If you have suggestions or encounter bugs, please submit them using the usual Java SE bug-reporting channel. Be sure to include jmc application Build id from «Help» — «About JDK Mission Control».
International use restrictions
Due to limited intellectual property protection and enforcement in certain countries, the source code may only be distributed to an authorized list of countries. You will not be able to access the source code if you are downloading from a country that is not on this list. We are continuously reviewing this list for addition of other countries.
Jmc java mission control
JDK Mission Control (JMC) 8.0 and 8.0.1 starts with Oracle JDK 8 (64-bit), and from JMC 8.1.0 onwards it requires Oracle JDK 11 and later. However, JMC 8 supports Java Management Console (JMX) monitoring and Java Flight Recorder (JFR) profiling of JVMs (JDK 7u40 and later) on any supported platform.
Prerequisite
- Ensure you install JDK 8 for JMC 8.0 and JMC 8.0.1, and JDK 11 or later for JMC 8.1.0 onwards. See: JDK 11 Installation Instructions or JDK 8 Installation Instructions as applicable.
- Ensure that the hsperfdata_username directory is present in the Windows $TEMP directory (for example, C:\Users\user_name\AppData\Local\Temp\hsperfdata_username) and is writable by the user. In case there are any issues while starting JMC with user permissions, then start JMC as an administrator. Also ensure that you are using a file system that supports ACL.
- For monitoring or recording a 32-bit JVM (JDK 7u40 and later), start the JVM with the following VM argument: -Dcom.sun.management.jmxremote
JMC Usage Instructions
Depending on your platform, run the following commands:
$ tar zxf jmc-_linux-x64.tar.gz $ ./jmc-_linux-x64/JDK\ Mission\ Control/jmc For example:
$ tar zxf jmc-8.3.1_linux-x64.tar.gz $ ./jmc-8.3.1_linux-x64/JDK\ Mission\ Control/jmc $ tar zxf jmc-_macos-x64.tar.gz $ open ./jmc-_macos-x64/JDK\ Mission\ Control.app For example:
$ tar zxf jmc-8.3.1_macos-x64.tar.gz $ open ./jmc-8.3.1_macos-x64/JDK\ Mission\ Control.app $ tar zxf jmc-_macos-aarch64.tar.gz $ open ./jmc-_macos-aarch64/JDK\ Mission\ Control.app For example:
$ tar zxf jmc-8.3.1_macos-aarch64.tar.gz $ open ./jmc-8.3.1_macos-aarch64/JDK\ Mission\ Control.app Double-click JDK Mission Control from Finder or drag JDK Mission Control.app to the Applications directory to access from Launchpad.
jar xvf "jmc-_windows-x64.zip" ".\jmc-_windows-x64\JDK Mission Control\jmc.exe" For example:
jar xvf "jmc-8.3.1_windows-x64.zip" ".\jmc-8.3.1_windows-x64\JDK Mission Control\jmc.exe" Double-click jmc.exe from Windows Explorer.
Specify the JDK Version to be Used by JMC
If there are multiple JDK versions installed, it is recommended to use the latest version of JDK to run JMC.
Edit the JMC launch configuration (jmc.ini) file and add the location of the JDK version to use (JDK 8 (64-bit) or later required). In Windows and Linux, the jmc.ini file is found under the JDK Mission Control directory; and in macOS, under JDK\ Mission\ Control.app/Contents/Eclipse directory.
Add the -vm flag and /bin ( \bin for windows) as shown in the following example. Ensure it is added just before the -vmargs flag.
-vm C:\Program Files\Java\jdk-11.0.19\bin -vmargs -vm /Library/Java/JavaVirtualMachines/jdk-11.0.19.jdk/Contents/Home/bin -vmargs -vm /usr/java/jdk-11.0.19/bin -vmargs Below is a sample of jmc.ini from the Windows platform:
-startup plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.500.v20220509-0833 --launcher.appendVmargs -vm C:\Program Files\Java\jdk-11.0.19\bin -vmargs -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints -XX:FlightRecorderOptions=stackdepth=128 -XX:+FlightRecorder -XX:StartFlightRecording=name=JMC_Default,maxsize=100m -Djava.net.preferIPv4Stack=true -Djdk.attach.allowAttachSelf=true --add-exports=java.xml/com.sun.org.apache.xerces.internal.parsers=ALL-UNNAMED --add-exports=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED --add-exports=java.management/sun.management=ALL-UNNAMED --add-exports=java.management/sun.management.counter.perf=ALL-UNNAMED --add-exports=jdk.management.agent/jdk.internal.agent=ALL-UNNAMED --add-exports=jdk.attach/sun.tools.attach=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED -Dsun.java.command=JMC --add-exports=java.desktop/sun.awt.windows=ALL-UNNAMED