Concepts

The Guide tells you what to type. These pages explain how stax works — enough that, when something is missing from a profile or a number looks off, you know where to look.

• Architecture — the three processes, the two daemons, and the sockets between them
• Platform Support — what macOS and Linux each capture, and what they don't
• Stack Unwinding — why your build needs frame pointers
• Sampling — what a profiler actually measures, on-CPU and off-CPU

If you only read one, read Stack Unwinding — a build without frame pointers produces a profile with no call stacks, and that surprises people.