Originally a fork of not-perf with some
bits of samply baked in (for macOS compatibility),
stax is now very much its own codebase.
The goal is pretty much a live version of Instruments.app: see on-cpu and off-cpu
stacks as flamegraphs, top-N functions, annotated disassembly etc.
stax uses the private kdebug framework, therefore it has access to things samply
doesn't, but it also has more moving pieces:
- a privileged launchd service for kdebug/kperf attachment
- a non-prileged (same-user) helper to obtain the task port, read/write inferior memory etc.
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.