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add notes for perf issue

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yukang 2025-02-14 13:43:55 +08:00
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src/profiling/with_perf.md
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@ -52,6 +52,13 @@ you made in the beginning. But there are some things to be aware of:
- You probably don't want incremental messing about with your - You probably don't want incremental messing about with your
profile. So something like `CARGO_INCREMENTAL=0` can be helpful. profile. So something like `CARGO_INCREMENTAL=0` can be helpful.
In case to avoid the issue of `addr2line xxx/elf: could not read first record` when reading
collected data from `cargo`, you may need use the latest version of `addr2line`:
```bash
cargo install addr2line --features="bin"
```
### Gathering a perf profile from a `perf.rust-lang.org` test ### Gathering a perf profile from a `perf.rust-lang.org` test
Often we want to analyze a specific test from `perf.rust-lang.org`. Often we want to analyze a specific test from `perf.rust-lang.org`.