# BurntSushi's torture test > Taken from https://github.com/BurntSushi/rsc-regexp The idiomatic Thompson NFA implementation BurntSushi has can execute this in around 0.24s on my M2 Macbook Pro, with the ripgrep version taking a mere 0.01s. By comparison my runtime looks to be O(seconds) so there's lots of room for improvement! ### Running the test for ad To run the test for ad, run the `torture_test` example in release mode