Want to get better at profiling & tracing your programs on Linux? `perf` is a super useful tool, but it's fairly complicated and I found it hard to get started with. Over the last 4 years, I've learned a lot about how perf works, and I've compressed what I know into this zine for you!
You'll learn how you can use perf to profile programs in many different programming languages (C, node.js, Java, Rust, and more!), how to count any kernel event you're interested in (syscalls! network packets sent!), how to analyze the data that perf gives you, and more!
What's included: a 24-page PDF that you can either read online or print out, staple, and read on your commute or give to friends!