On 2/15/2022 7:10 PM, Eric Snow wrote:

* the naive implementation shows a 4% slowdown

Without understanding all the benefits, this seems a bit too much for me. 2% would be much better.

* we have a number of strategies that should reduce that penalty

I would like to see that before approving the PEP.

* without immortal objects, the implementation for per-interpreter GIL
will require a number of non-trivial workarounds

To me, that says to speed up immortality first.

That last one is particularly meaningful to me since it means we would
definitely miss the 3.11 feature freeze.

3 1/2 months from now.

With immortal objects, 3.11 would still be in reach.

Is it worth trying to rush it a bit?

--
Terry Jan Reedy

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