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Comprehensive Profiling Support in the Java Virtual Machine

Sheng Liang        Deepa Viswanathan
Sun Microsystems Inc.
901 San Antonio Road, CUP02-302
Palo Alto, CA 94303
{sheng.liang,deepa.viswanathan}@eng.sun.com

• Abstract
• Introduction
• Profiling Architecture
  • Java Virtual Machine Profiler Interface
  • The HPROF Agent
• CPU Time Profiling
  • Design Choices
    • Granularity
    • Statistical Sampling vs. Code Instrumentation
  • Thread-Aware CPU Time Sampling
• Heap Profiling
  • Excessive Heap Allocation
  • Algorithm-Independent Allocation and Garbage Collection Events
  • Unnecessary Object Retention
• Monitor Profiling
  • Monitor Contention
  • Deadlocks
• Support for Interactive Low-Overhead Profiling
  • Overhead of Disabled Profiling Events
  • The Partial Profiling Problem
• Related Work
• Conclusions
  • Acknowledgements
• Bibliography
• About this document ...