STINNER Victor added the comment:

> - json_loads: 71.4 us +- 0.8 us -> 72.9 us +- 1.4 us: 1.02x slower

Hum, sadly this benchmark is still unstable after my change 59b91b4e9506 ("Mark 
hot functions using __attribute__((hot))", oops, I wanted to write Mark, not 
Make :-/).

This benchmark is around 63.4 us during many months, whereas it reached 72.9 us 
at rev 59b91b4e9506, and the new run (also using hot attribute) gone back to 
63.0 us...

I understand that json_loads depends on the code placement of some other 
functions which are not currently marked with the hot attribute.

https://speed.python.org/timeline/#/?exe=4&ben=json_loads&env=1&revs=50&equid=off&quarts=on&extr=on

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<http://bugs.python.org/issue28618>
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