[tex-live] Request for performance check of legacy darwin (luatex)

[Mojca Miklavec]

On 8 March 2018 at 14:38, jfbu wrote:
>
> Here is with luatex on the same test file
>
> $ time luatex temptest.tex
> This is LuaTeX, Version 0.95.0 (TeX Live 2016)
>  restricted system commands enabled.
> (./temptest.tex . . . . . . . . . .)
> warning  (pdf backend): no pages of output.
> Transcript written on temptest.log.
>
> real    0m1.585s
> user    0m1.561s
> sys     0m0.018s
>
> $ time luatex temptest.tex
> This is LuaTeX, Version 1.0.4 (TeX Live 2017/MacPorts 2017_1)
>  restricted system commands enabled.
> (./temptest.tex . . . . . . . . . .)
> warning  (pdf backend): no pages of output.
> Transcript written on temptest.log.
>
> real    0m1.745s
> user    0m1.716s
> sys     0m0.025s
>
> $ time luatex temptest.tex
> This is LuaTeX, Version 1.07.0 (TeX Live 2018)
>  restricted system commands enabled.
> (./temptest.tex . . . . . . . . . .)
> warning  (pdf backend): no pages of output.
> Transcript written on temptest.log.
>
> real    0m2.618s
> user    0m2.593s
> sys     0m0.020s

Thank you very much. There's evidently something "wrong" with
efficiency of the binaries generated with the latest clang compiler,
but it's not exactly clear to me why this would be the case. 75%
slowdown is very significant.

I'll try to use your testcase and prepare a few more variants of
binaries to test (using different compilers and compiler options).

This got me thinking. I'm always setting up some CXXFLAGS. I wonder if
the results would be any faster if I omit CXXFLAGS as setting the
flags might override some optimisation that would otherwise be set.

I don't find your question any longer, but no, MacTeX won't work on 10.9.

Mojca