Beyond Flamegraphs: Precise Rust Profiling with hotpath-rs
Rust is blazingly fast - until you're trying to understand why your own code isn't. In this talk, I’ll introduce hotpath-rs, and describe how it compares to traditional sampling profilers. You’ll learn how to profile and optimize Rust code at the nanosecond scale, and gain practical techniques for uncovering bottlenecks in async-heavy applications. I’ll also explain how I’m using hotpath to profile itself, and share non-trivial optimization techniques used to minimize instrumentation overhead.
