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Update benchmarking README (#16486)

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The `/benches/README.md` was still stuck in the past when we used
`divan` as our benchmark runner. Update it to show how to use `tango`
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Stefan Holderbach
2025-08-21 22:08:28 +02:00
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parent a08e1f6217
commit ba953a7e8b
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benches/README.md
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@@ -1,7 +1,13 @@
# Divan benchmarks
# Tango benchmarks
These are benchmarks using [Divan](https://github.com/nvzqz/divan), a microbenchmarking tool for Rust.
These are benchmarks using [tango](https://github.com/bazhenov/tango), a benchmark tool which pairs the executions of two versions of the given benchmarks. This claims to reduce the noise from other factors on the system and allow a more reliable comparison of two different implementation.
Run all benchmarks with `cargo bench`
The easiest way to start is to run:
Or run individual benchmarks like `cargo bench -- <regex>` e.g. `cargo bench -- parse`
```nushell
use toolkit.nu
# To compare the current branch to main
toolkit benchmark-compare
# or to compare a target git-revision against a reference git-revision
toolkit benchmark-compare <target> <reference>
```