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The relative performance of C and Rust

bcantrill.dtrace.org

My blog post on falling in love with Rust got quite a bit of attention – with many being surprised by what had surprised me as well: the high performance of my naive Rust versus my (putatively less naive?) C. However, others viewed it as irresponsible to report these performance differences, believing that these results would be blown out of proportion or worse. The concern is not entirely misplaced: system benchmarking is one of those areas where – in Jonathan Swift’s words from three centuries ago – “falsehood flies, and the truth comes limping after it.”

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