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Re: Make COPY format extendable: Extract COPY TO format implementations - Mailing list pgsql-hackers

From Michael Paquier
Subject Re: Make COPY format extendable: Extract COPY TO format implementations
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Msg-id ZbsWZgYZjkXh9hNO@paquier.xyz
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In response to Re: Make COPY format extendable: Extract COPY TO format implementations  (Junwang Zhao <zhjwpku@gmail.com>)
Responses Re: Make COPY format extendable: Extract COPY TO format implementations
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On Thu, Feb 01, 2024 at 11:43:07AM +0800, Junwang Zhao wrote:
> The first 6 rounds are like 10% better than the later 9 rounds, is this normal?

Even with HEAD?  Perhaps you have some OS cache eviction in play here?
FWIW, I'm not seeing any of that with longer runs after 7~ tries in a
loop of 15.
--
Michael
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