How to speed up the Rust compiler in September 2026
7.5 relevance
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technical depth 9
novelty 8
actionability 6
community 7
strategic 6
personal 7
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Rust compiler speedup roadmap, highly technical and relevant for Rust developers.
Summary
My last post on the Rust compiler’s performance was two months ago and a lot has happened since then. Overall progress The measurements for the period 2026-07-29 to 2026-09-28 can be seen here . The mean wall-time reduction was 4.57%, which is a remarkable improvement in just two months. Of the 629 benchmark measurements, 555 of them improved and only 74 regressed. A number of benchmarks saw double-digit percentage reductions. The technical term for this result is “a sea of green”. rustdoc In my last post I mentioned how