Lib.rs

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#benchmark

dev codspeed

Core instrumentation library for CodSpeed

by Arthur Pastel and 15 contributors

36 stable releases (3 major)

4.1.0 Nov 7, 2025
3.0.5 Jul 31, 2025
2.10.1 Apr 7, 2025
2.9.1 Mar 10, 2025
0.1.0 Dec 15, 2022

#25 in Profiling

Download history 65505/week @ 2025-08-06 47001/week @ 2025-08-13 46487/week @ 2025-08-20 37034/week @ 2025-08-27 47785/week @ 2025-09-03 47424/week @ 2025-09-10 51759/week @ 2025-09-17 59929/week @ 2025-09-24 58506/week @ 2025-10-01 68598/week @ 2025-10-08 80604/week @ 2025-10-15 98311/week @ 2025-10-22 98728/week @ 2025-10-29 106791/week @ 2025-11-05 109509/week @ 2025-11-12 99767/week @ 2025-11-19

432,734 downloads per month
Used in 161 crates (8 directly)

MIT/Apache

720KB
19K SLoC

C 16K SLoC // 0.0% comments Zig 1.5K SLoC // 0.0% comments Rust 1K SLoC // 0.0% comments Bazel 41 SLoC Just 25 SLoC Shell 6 SLoC Python 6 SLoC // 0.6% comments

codspeed

CI Crates.io Discord CodSpeed Badge

The core library used to integrate with Codspeed runners

For now, this crate should not be used directly. Instead, use one of the integration crates:

  • codspeed-bencher-compat
  • codspeed-criterion-compat

Dependencies

~3–15MB
~147K SLoC