magic-trace

Tech stack & purpose

Magic-trace collects and displays high-resolution traces of process execution using Intel Processor Trace technology, enabling developers to analyze performance issues, understand actual program behavior, and investigate crashes. Built primarily in OCaml, the project uses the Linux `perf` command to drive Intel PT data collection and decoding, along with supporting libraries like `libipt` for direct processor trace handling. The tool was originally created by Tristan Hume and is currently maintained by Jane Street, which continues active development and distribution of the project.

Community & reference links

• on Discord
• `perf`
• fuchsia.dev/fuchsia-src/reference/tracing/trace-format
• GitHub discussion group
• hit up the issue tracker
• the magic-trace wiki
• Perfetto
• take a quick tour through the codebase
• read the build instructions
• 2%-10% overhead
• prior art
• set up your own local copy of the Perfetto UI
• supported
• more testimonials...
• magic-trace.org
• magic-trace.org
• Intel Processor Trace
• perfetto.dev/

Languages

Contributors

• 
  Clark Gaebel138 commits · 119 followers
• 
  Tudor Brindus118 commits · 211 followers
• 
  Aaron Lamoreaux22 commits · 39 followers
• 
  Kevin Svetlitski20 commits · 68 followers
• 
  Guanzhong Chen18 commits · 199 followers
• Ilana Brooks3 commits
• 
  Arseniy Alekseyev3 commits · 61 followers
• Hao Lian3 commits
• Brian Nigito3 commits
• Michael Jarrett2 commits
• Theodor Thornhill1 commits
• Clyve Gassant1 commits
• Stefan Hoffmeister1 commits
• Peter Baumbacher1 commits
• 
  Jason Yuen1 commits · 22 followers
• Fredrik Ekholm1 commits
• Salman Muin Kayser Chishti1 commits
• Ed Catmur1 commits
• Robbert Hofman1 commits
• Bill Duff1 commits
• 
  Greta Yorsh1 commits · 31 followers
• Josiah White1 commits
• 
  v-gb1 commits · 18 followers
• Ethan Van Der Heijden1 commits