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help / color / mirror / Atom feedFrom: Maxim Orlov <[email protected]>
To: Heikki Linnakangas <[email protected]>
Cc: wenhui qiu <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Alexander Korotkov <[email protected]>
Cc: Postgres hackers <[email protected]>
Subject: Re: POC: make mxidoff 64 bits
Date: Thu, 20 Nov 2025 19:30:51 +0300
Message-ID: <CACG=ezbDgXvgNcxMmiCNZR1g95CBT+Y2rVhZWa_1SuOWeFREDw@mail.gmail.com> (raw)
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On Wed, 19 Nov 2025 at 19:20, Heikki Linnakangas <[email protected]> wrote:
>
> I think those recipes need to be adjusted for 64-bit offsets.
Yes, we need to do it.
Sorry if this is too obvious, but with 32-bit offsets, we get:
SLRU_PAGES_PER_SEGMENT * BLKSZ / sizeof(MXOff) =
32 * 8192 / 4 = 65,536 mxoff per segment.
Now, with 64-bits offsets, we should have half as much.
--
Best regards,
Maxim Orlov.
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Subject: Re: POC: make mxidoff 64 bits
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