3 ms·

Compare performance of Rust #7 (PCRE2) vs Rust #6 (regex) at benchmarks game: https://benchmarksgame-team.pages.debian.net/benchmarksgame/performance/regexredux

• burntsushi 6y ago
  That's a single benchmark. Before regex-redux was regex-dna, and Rust's regex engine was faster than PCRE2 on that benchmark. So how does that change your conclusion? The regex crate has many more benchmarks: https://github.com/rust-lang/regex/blob/master/bench/log/07/pcre2 https://github.com/rust-lang/regex/blob/master/bench/log/07/... and https://github.com/rust-lang/regex/blob/master/bench/log/07/rust https://github.com/rust-lang/regex/blob/master/bench/log/07/... for example. And then there are things like this which can impact the performance of real world use cases: https://github.com/BurntSushi/ripgrep/blob/master/FAQ.md#pcre2-slow https://github.com/BurntSushi/ripgrep/blob/master/FAQ.md#pcr... Please don't draw sweeping conclusions about the comparative performance of regex engines from a single benchmark.