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This book explains how modern CPUs actually work, why software runs fast or slow and how to systematically measure, diagnose and improve performance. It covers the fundamentals of processor architecture and the advanced techniques used by systems programmers to extract every last cycle of performance. Every concept is grounded in real hardware behavior, measured with real tools and explained with real code. Whether you are writing a high-frequency trading engine, a database kernel, a game engine or simply code that refuses to be slow, this book will give you the knowledge to understand what your processor is doing with your instructions and how to make it do more, faster.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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