[XeTeX] performance on Windows machines

[Akira Kakuto]

> To test performance with legacy TeX stuff (not OpenType, etc), I  
> sometimes run texbook.tex (with a suitable prefix file to make it  
> actually typeset). The Mac Pro takes about 1.1-1.2 seconds (real  
> time) to generate the 494-page PDF using xetex -output- 
> driver="xdvipdfmx -q -E". Wow! Actually, that's faster than pdftex  
> can do it. :)

I'm amazed at the speed of xetex. XeTeX for W32 binary is
not optimized, while pdftex for W32 is optimized:
 
xetex --proctimes texbook
Time statistics: user mode=2328 ms, kernel mode=125 ms, total=2453 ms.

pdftex --proctimes texbook
Time statistics: user mode=2828 ms, kernel mode=187 ms, total=3015 ms.

Best regards,
Akira