Do you perhaps happen to have a link to the results of these benchmarks? I'm desperately looking for some, and http://lh3lh3.users.sourceforge.net/reb.shtml seems to be quite date.
And, impressive work on the regex engine!
And, impressive work on the regex engine!
There is some analysis---only for Rust's regex engine---with the definition of the benchmarks themselves: https://github.com/rust-lang-nursery/regex/blob/master/bench... (If you fish around there, you'll also see how everything is wired up.)
My plan at the moment is to publish something more comprehensive, but it will take time.
And yes, the benchmarks you linked are not only outdated, but misleading, and parts of the conclusion I do not agree with. It also doesn't include PCRE2, which is very fast.
Btw., there is also https://github.com/openresty/sregex which you might find interesting.