diff --git a/draft/2025-06-25-this-week-in-rust.md b/draft/2025-06-25-this-week-in-rust.md index 9d9ce4675..5c0c47d4e 100644 --- a/draft/2025-06-25-this-week-in-rust.md +++ b/draft/2025-06-25-this-week-in-rust.md @@ -119,7 +119,26 @@ If you are an event organizer hoping to expand the reach of your event, please s ### Rust Compiler Performance Triage - +A week dominated by the landing of a large patch implementing [RFC#3729](https://github.com/rust-lang/rfcs/pull/3729) which unfortunately introduced rather sizeable performance regressions (avg of ~1% instruction count on 111 primary benchmarks). This was deemed worth it so that the patch could land and performance could be won back in follow up PRs. + +Triage done by **@rylev**. +Revision range: [45acf54e..42245d34](https://perf.rust-lang.org/?start=45acf54eea118ed27927282b5e0bfdcd80b7987c&end=42245d34d22ade32b3f276dcf74deb826841594c&absolute=false&stat=instructions%3Au) + +**Summary**: + +| (instructions:u) | mean | range | count | +|:----------------------------------:|:-----:|:---------------:|:-----:| +| Regressions ❌
(primary) | 1.1% | [0.2%, 9.1%] | 123 | +| Regressions ❌
(secondary) | 1.0% | [0.1%, 4.6%] | 86 | +| Improvements ✅
(primary) | -3.8% | [-7.3%, -0.3%] | 2 | +| Improvements ✅
(secondary) | -2.3% | [-18.5%, -0.2%] | 44 | +| All ❌✅ (primary) | 1.0% | [-7.3%, 9.1%] | 125 | + + +2 Regressions, 4 Improvements, 10 Mixed; 7 of them in rollups +40 artifact comparisons made in total + +[Full report here](https://github.com/rust-lang/rustc-perf/blob/a63db4d1799853b334e4106d914fba24e49c8782/triage/2025/2025-06-24.md) ### [Approved RFCs](https://github.com/rust-lang/rfcs/commits/master)