HPS: Hybrid Profiling Support

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Executive Summary

Key to understanding and optimizing complex applications, is the ability to dynamically monitor executing programs with low overhead and high accuracy. Toward this end, the authors present HPS, a Hybrid Profiling Support system. HPS employs a hardware/software approach to program sampling that transparently, efficiently, and dynamically samples an executing instruction stream. The system is an extension and application of Dynamic Instruction Stream Editing (DISE), a hardware technique that macro-expands instructions in the pipeline decode stage at runtime.

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