[issue22003] BytesIO copy-on-write

[Stefan Krah]

Stefan Krah added the comment:

> Just curious, what causes e.g. telco to differ up to 7% between runs? That's really huge.

telco.py always varies a lot between runs (up to 10%), even in the
big version "telco.py full":

http://bytereef.org/mpdecimal/quickstart.html#telco-benchmark


Using the average of 10 runs, I can't really see a slowdown.

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