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Merge pull request #2475 from lolbinarycat/patch-3 

Profiling with perf: specify the section of bootstrap settings.
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nora 2025-06-17 18:34:03 +02:00 committed by GitHub
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@ -7,8 +7,8 @@ This is a guide for how to profile rustc with [perf](https://perf.wiki.kernel.or
- Get a clean checkout of rust-lang/master, or whatever it is you want - Get a clean checkout of rust-lang/master, or whatever it is you want
to profile. to profile.
- Set the following settings in your `bootstrap.toml`: - Set the following settings in your `bootstrap.toml`:
- `debuginfo-level = 1` - enables line debuginfo - `rust.debuginfo-level = 1` - enables line debuginfo
- `jemalloc = false` - lets you do memory use profiling with valgrind - `rust.jemalloc = false` - lets you do memory use profiling with valgrind
- leave everything else the defaults - leave everything else the defaults
- Run `./x build` to get a full build - Run `./x build` to get a full build
- Make a rustup toolchain pointing to that result - Make a rustup toolchain pointing to that result