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Re: POC: make mxidoff 64 bits - Mailing list pgsql-hackers

From	Maxim Orlov
Subject	Re: POC: make mxidoff 64 bits
Date	November 20 19:30:51
Msg-id	CACG=ezbDgXvgNcxMmiCNZR1g95CBT+Y2rVhZWa_1SuOWeFREDw@mail.gmail.com Whole thread Raw
In response to	Re: POC: make mxidoff 64 bits (Heikki Linnakangas <hlinnaka@iki.fi>)
List	pgsql-hackers

On Wed, 19 Nov 2025 at 19:20, Heikki Linnakangas <hlinnaka@iki.fi> 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.

From: Nathan Bossart
Date: 20 November, 19:25:37
Subject: Re: another autovacuum scheduling thread

From: Sami Imseih
Date: 20 November, 19:34:14
Subject: Re: another autovacuum scheduling thread