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Key to understanding and optimizing complex applications, is our ability to dynamically monitor executing programs with low overhead and high accuracy. Toward this end, we 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. Our system is an extension and application of Dynamic Instruction Stream Editing (DISE), a hardware technique that macro-expandsdoi:10.1109/pact.2005.24 dblp:conf/IEEEpact/MousaK05 fatcat:kj2s5g6v35caxechpwei4hnibi