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Oct 9, 2025
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Add perf triage for 2025-10-06 #7108

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Add perf triage for 2025-10-06
panstromek Oct 6, 2025
ec9793a
fix typo
panstromek Oct 7, 2025
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21 changes: 20 additions & 1 deletion draft/2025-10-08-this-week-in-rust.md
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Expand Up @@ -141,7 +141,26 @@ If you are an event organizer hoping to expand the reach of your event, please s

### Rust Compiler Performance Triage

<!-- Perf results go here -->
Largely a positive week. Big win coming from avoiding unnecessary work for debug log in [#147293](https://github.com/rust-lang/rust/pull/147293), and another one for rustdoc from optimized span representation for highlighter [#147189](https://github.com/rust-lang/rust/pull/147189). Lots of noisy results otherwise.

Triage done by **@panstromek**.
Revision range: [8d72d3e1..1a3cdd34](https://perf.rust-lang.org/?start=8d72d3e1e96f58ca10059a6bb6e8aecba4a0e9cd&end=1a3cdd34629306fa67624eaa60d73687e7fcf855&absolute=false&stat=instructions%3Au)

**Summary**:

| (instructions:u) | mean | range | count |
|:----------------------------------:|:-----:|:---------------:|:-----:|
| Regressions ❌ <br /> (primary) | 0.5% | [0.2%, 2.0%] | 10 |
| Regressions ❌ <br /> (secondary) | 0.4% | [0.0%, 0.8%] | 50 |
| Improvements ✅ <br /> (primary) | -1.3% | [-5.3%, -0.2%] | 147 |
| Improvements ✅ <br /> (secondary) | -1.3% | [-12.7%, -0.1%] | 111 |
| All ❌✅ (primary) | -1.2% | [-5.3%, 2.0%] | 157 |


6 Regressions, 3 Improvements, 6 Mixed; 8 of them in rollups
40 artifact comparisons made in total

[Full report here](https://github.com/rust-lang/rustc-perf/blob/33d1d2f6103c22772c45562aa159d1e1257c228e/triage/2025/2025-10-06.md)

### [Approved RFCs](https://github.com/rust-lang/rfcs/commits/master)

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