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jdk-mission-control-users-guide.pdf
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jdk-mission-control-users-guide.pdf
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Java Platform, Standard Edition
JDK Mission Control User Guide
Release 8
F78631-01
April 2023
Java Platform, Standard Edition JDK Mission Control User Guide, Release 8
F78631-01
Copyright © 2001, 2023, Oracle and/or its affiliates.
This software and related documentation are provided under a license agreement containing restrictions on
use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your
license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license,
transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse
engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is
prohibited.
The information contained herein is subject to change without notice and is not warranted to be error-free. If
you find any errors, please report them to us in writing.
If this is software, software documentation, data (as defined in the Federal Acquisition Regulation), or related
documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S.
Government, then the following notice is applicable:
U.S. GOVERNMENT END USERS: Oracle programs (including any operating system, integrated software,
any programs embedded, installed, or activated on delivered hardware, and modifications of such programs)
and Oracle computer documentation or other Oracle data delivered to or accessed by U.S. Government end
users are "commercial computer software," "commercial computer software documentation," or "limited rights
data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental
regulations. As such, the use, reproduction, duplication, release, display, disclosure, modification, preparation
of derivative works, and/or adaptation of i) Oracle programs (including any operating system, integrated
software, any programs embedded, installed, or activated on delivered hardware, and modifications of such
programs), ii) Oracle computer documentation and/or iii) other Oracle data, is subject to the rights and
limitations specified in the license contained in the applicable contract. The terms governing the U.S.
Government's use of Oracle cloud services are defined by the applicable contract for such services. No other
rights are granted to the U.S. Government.
This software or hardware is developed for general use in a variety of information management applications.
It is not developed or intended for use in any inherently dangerous applications, including applications that
may create a risk of personal injury. If you use this software or hardware in dangerous applications, then you
shall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure its
safe use. Oracle Corporation and its affiliates disclaim any liability for any damages caused by use of this
software or hardware in dangerous applications.
Oracle®, Java, and MySQL are registered trademarks of Oracle and/or its affiliates. Other names may be
trademarks of their respective owners.
Intel and Intel Inside are trademarks or registered trademarks of Intel Corporation. All SPARC trademarks are
used under license and are trademarks or registered trademarks of SPARC International, Inc. AMD, Epyc,
and the AMD logo are trademarks or registered trademarks of Advanced Micro Devices. UNIX is a registered
trademark of The Open Group.
This software or hardware and documentation may provide access to or information about content, products,
and services from third parties. Oracle Corporation and its affiliates are not responsible for and expressly
disclaim all warranties of any kind with respect to third-party content, products, and services unless otherwise
set forth in an applicable agreement between you and Oracle. Oracle Corporation and its affiliates will not be
responsible for any loss, costs, or damages incurred due to your access to or use of third-party content,
products, or services, except as set forth in an applicable agreement between you and Oracle.
Contents
Preface
Audience vi
Documentation Accessibility vi
Diversity and Inclusion vi
Related Documents vi
Conventions vii
1
What's New in JDK Mission Control 8
Dependency View 1-1
Graph View 1-3
Heatmap View 1-4
Flame Graph View 1-5
Websocket Server to Access JFR Stack Trace 1-6
JMC Agent 1-7
Treemap Viewer in JOverflow 1-8
Coherence Tab Pack Plug-in Converted to SWT 1-8
Support for LZ4 Compressed Recordings 1-9
Improved Thread Graphs 1-9
Allocation Pressure Column Added to Memory and TLAB Pages 1-9
Enabling Non-execute JDBC Events of WebLogic Plugin 1-9
Reintroduction of Percentage Column 1-10
2
JDK Mission Control
3
Install JDK Mission Control and Supported Plug-ins
System Requirements and Supported Platforms 3-1
Download and License Information 3-1
Installation Instructions 3-2
Install JMC Standalone Application 3-2
Install Plug-ins for JMC Standalone Application 3-3
iii
Install JMC and Associated Eclipse Plug-ins 3-3
Plug-in Details 3-4
Start JDK Mission Control 3-5
4
JDK Mission Control Application GUI
5
Working with Remote JVMs
Java Management Extension 5-1
Creating New Custom Connection 5-2
Java Discovery Protocol (JDP) 5-2
6
Real-time JMX Monitoring
Overview Tab 6-1
JMX Data Persistence 6-1
MBean Browser Tab 6-2
Triggers Tab 6-4
System Tab 6-5
Memory Tab 6-5
Threads Tab 6-6
Diagnostic Commands 6-7
7
Flight Recorder
Start a Flight Recording 7-2
Save Current Buffers into a Flight Recording 7-3
Analyze a Flight Recording Using JMC 7-3
View Automated Analysis Results Page 7-4
Analyze the Java Application 7-4
JVM Internals 7-5
Environment 7-5
8
Accessibility in JDK Mission Control
Screen Readers 8-1
JDK Mission Control Accessibility Mode 8-1
Show Text Labels on Buttons 8-2
Resize Online Help Text 8-2
Accessibility Known Issues and Workarounds 8-2
iv
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