[luatex] slower texlua at LuaTeX 1.0.4 (TL 2017) ?

[jfbu]

> In other words, the issue is a non-issue not worth the time several
> respected LuaTex experts are putting into it.

Hi list,

should I conclude that the LuaTeX experts are not the least
bit interested into understanding which compilation flags
were modified and resulted in a texlua twice slower 
on macOS 10.9.5 with TeXLive 2017 release than it was
with TeXLive 2016 for the same machine?

should I conclude it is _my fault_ to have reported this
FACT at the initial message of this thread?

did I receive appropriate answers when Hans Hagen
only reaction was to tell that my code (which
I said explicitely was NOT MY CODE) was crap and
could be sped up 99%, which was NOT my question?
NOT MY CODE, NOT MY ALGORITHM, NOT MY BINARY.

It was the first ever time I ever ran texlua. Next time
you run some software on your machine and find that
between version 2016 and version 2017 its execution
speed has increased 100% maybe you will consider that
the experts of this software "put some time into understanding
the cause",

Jean-François