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Asked: 2026-06-08T18:25:21+00:00

I often measure code snippets using rdtsc which gives me an idea of cycles

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I often measure code snippets using rdtsc which gives me an idea of cycles taken by reading in the time stamp counter but I am aware that processors (in particular mine is an intel Xeon) have performance counters to measure branch misses and all other good stuff. How do I read that? Is it possible with similar code to rdtsc (http://en.wikipedia.org/wiki/Rdtsc) ? Also, I am aware there is a product called perfmon which does this but I would like to do this myself in a simple programmatic way to also learn more. How can I get started with this?

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1 Answer

  1. Editorial Team

    Have a look at PAPI. It provides an API for doing this.

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