Re: Shave a few cycles off our ilog10 implementation

From: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
To: David Fetter <david(at)fetter(dot)org>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Shave a few cycles off our ilog10 implementation
Date: 2024-10-30 19:54:20
Message-ID: 447421be-3558-4333-91bd-33dc72ad4d44@iki.fi
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On 30/10/2024 21:27, David Fetter wrote:
> Please find attached a patch to $Subject
>
> I've done some preliminary testing, and it appears to shave somewhere
> between 25-50% off the operations themselves, and these cascade into
> things like formatting result sets and COPY OUT.

Impressive! What did you use to performance test it, to get those results?

--
Heikki Linnakangas
Neon (https://neon.tech)

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