$ time node -e 'require("markdown-it")().render("\\``".repeat(10000))'
1.02user 0.00system 0:01.02elapsed 100%CPU (0avgtext+0avgdata 37880maxresident)k
0inputs+0outputs (0major+3574minor)pagefaults 0swaps
$ time node -e 'require("markdown-it")().render("\\``".repeat(20000))'
3.45user 0.00system 0:03.46elapsed 100%CPU (0avgtext+0avgdata 39364maxresident)k
0inputs+0outputs (0major+3679minor)pagefaults 0swaps
$ time node -e 'require("markdown-it")().render("\\``".repeat(40000))'
12.51user 0.01system 0:12.53elapsed 99%CPU (0avgtext+0avgdata 43220maxresident)k
0inputs+0outputs (0major+4900minor)pagefaults 0swaps
$ time node -e 'require("markdown-it")().render("\\``".repeat(80000))'
52.40user 0.02system 0:52.47elapsed 99%CPU (0avgtext+0avgdata 47756maxresident)k
0inputs+0outputs (0major+6870minor)pagefaults 0swaps