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Re: Add 64-bit XIDs into PostgreSQL 15 - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Add 64-bit XIDs into PostgreSQL 15
Date
Msg-id CA+TgmoZuxbWe+dMo4XDXL1w+S2Nxbc7dfaYOSZKXJR-xj_+MdA@mail.gmail.com
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In response to Re: Add 64-bit XIDs into PostgreSQL 15  (Andres Freund <andres@anarazel.de>)
Responses Re: Add 64-bit XIDs into PostgreSQL 15
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On Sun, Feb 8, 2026 at 12:21 PM Andres Freund <andres@anarazel.de> wrote:
> On the topic of pd_prune_xid - I've been wondering if, instead of the double
> xmax approach, the high bits of the 64bit xid could be stored in pd_prune_xid,
> signified by a flag on the page indicating so.

We potentially have both XIDs and MXIDs to worry about, though.

--
Robert Haas
EDB: http://www.enterprisedb.com

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