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From: Jeroen Vermeulen <[email protected]>
To: [email protected]
Subject: libpq: PQgetCopyData() and allocation overhead
Date: Fri, 10 Feb 2023 00:25:45 +0100
Message-ID: <CA+zULE5AYd+78w7Uu7jN=5N3w-9vsKuK2WrpjkKwS65hyhWfbw@mail.gmail.com> (raw)

Would there be interest in a variant of PQgetCopyData() that re-uses the
same buffer for a new row, rather than allocating a new buffer on each
iteration?

I tried it on a toy benchmark, and it reduced client-side CPU time by about
12%.  (Less of a difference in wall-clock time of course; the client was
only using the CPU for a bit over half the time.)


Jeroen

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