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Contents

Title and Copyright Information

Preface

• Audience
• Documentation Accessibility
• Conventions

1 About Java Flight Recorder

• 1.1 Understanding Events
• 1.2 Understanding Data Flow
• 1.3 Java Flight Recorder Architecture
• 1.4 Enabling Java Flight Recorder
  • 1.4.1 Improving the Fidelity of the JFR Method Profiler

2 Running Java Flight Recorder

• 2.1 Using the Command Line
• 2.2 Using Diagnostic Commands
• 2.3 Configuring Recordings
  • 2.3.1 Setting Maximum Size and Age
  • 2.3.2 Setting the Delay
  • 2.3.3 Setting Compression
• 2.4 Creating Recordings Automatically
  • 2.4.1 Creating a Recording On Exit
  • 2.4.2 Creating a Recording Using Triggers
• 2.5 Security
• 2.6 Troubleshooting

A Command Reference

• A.1 Command-Line Options
• A.2 Diagnostic Command Reference
  • A.2.1 JFR.start
  • A.2.2 JFR.check
  • A.2.3 JFR.stop
  • A.2.4 JFR.dump
  • A.2.5 VM.unlock_commercial_features
  • A.2.6 VM.check_commercial_features