bug#31138: Native json slower than json.el

[Eli Zaretskii]

> Cc: Sébastien Chapuis <sebastien@chapu.is>,
>  31138@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Mon, 22 Apr 2019 01:14:10 +0300
> 
> On 21.04.2019 13:23, yyoncho wrote:
> > IMO if validation of the data that comes from external libraries is 
> > taking a lot of time then it does not make sense to use external 
> > libraries at all when we are aiming for performance gains.
> 
> If we'll have to call make_specified_string for each parsed JSON string, 

What could/would be an alternative to that?  We must make a Lisp
string out of each string returned by libjansson.