[luatex] LuaLaTeX's performance

[Jonathan Fine]

Pander wrote:

> Today's version:
> 
> $ time tex '\end'
> This is TeX, Version 3.1415926 (TeX Live 2010)
> No pages of output.
> Transcript written on texput.log.
> 
> real	0m0.149s
> user	0m0.050s
> sys	0m0.030s

[snip]

Just a cautionary note.  The top line (real) can be quite variable, due 
to disk caching.  Notice that the user and sys times don't add to the 
real time.

> $ time luatex '\end'
> This is LuaTeX, Version beta-0.64.0-2010111216
>  restricted \write18 enabled.
> No pages of output.
> Transcript written on texput.log.
> 
> real	0m0.222s
> user	0m0.180s
> sys	0m0.030s

And here they do (almost).

I offer this explanation.  The files that luatex needs were in cache but 
not those needed by tex.  Run tex a few times and the real time will 
come down to 0.080 or so I think.  Whereas luatex will always be about 
0.210.

-- 
Jonathan