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PERF tutorial: Finding execution hot spots | Sand, software and sound

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This article is the first of a three part series on the PERF (linux-tools) performance measurement and profiling system. Part 1 demonstrates how to use PERF to

This article is the first of a three part series on the PERF (linux-tools) performance measurement and profiling system. Part 1 demonstrates how to use PERF to identify and analyze the hottest execution spots in a program. It covers the basic PERF commands, options and software performance events. Part 2 introduces hardware performance events and demonstrates how to measure hardware events across an entire application. It defines and discusses several useful rates and ratios for performance assessment and analysis. Part 3 uses hardware performance event sampling to identify and analyze program

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