For what it is worth: $ time tex '\end' This is TeX, Version 3.1415926 (TeX Live 2009) No pages of output. Transcript written on texput.log.
real 0m0.083s user 0m0.068s sys 0m0.008s $ time xetex '\end' This is XeTeX, Version 3.1415926-2.2-0.9995.2 (TeX Live 2009) entering extended mode No pages of output. Transcript written on texput.log. real 0m0.337s user 0m0.232s sys 0m0.104s $ time luatex '\end' This is LuaTeX, Version beta-0.40.6-2009100509 (TeX Live 2009) No pages of output. Transcript written on texput.log. real 0m2.554s user 0m2.428s sys 0m0.124s 2.6 GHz AMD 64 bit running without any power saving. -- Jonathan
