[issue13903] New shared-keys dictionary implementation

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

I see two unrelated parts in your patch:
 - change dictionary structure in memory
 - change many constants linked to optimization: PyDICT_MAXFREELIST: 80->40, 2/3->5/8, etc.

You may open a new issue for the second part, except if I am wrong and you need to change constants for the first part?

(I don't understand why you changed constants and how you chose new values.)

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nosy: +haypo

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