Horton

Re: POC: make mxidoff 64 bits

wenhui qiu <qiuwenhuifx@gmail.com>

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From: wenhui qiu <qiuwenhuifx@gmail.com>
To: Maxim Orlov <orlovmg@gmail.com>
Cc: Alexander Korotkov <aekorotkov@gmail.com>, Postgres hackers <pgsql-hackers@lists.postgresql.org>, Heikki Linnakangas <hlinnaka@iki.fi>
Date: 2025-03-27T02:03:22Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Fix partial read handling in pg_upgrade's multixact conversion

  2. Increase timeout in multixid_conversion upgrade test

  3. Improve sanity checks on multixid members length

  4. Clarify comment on multixid offset wraparound check

  5. Never store 0 as the nextMXact

  6. Add runtime checks for bogus multixact offsets

  7. Widen MultiXactOffset to 64 bits

  8. Move pg_multixact SLRU page format definitions to a separate header

  9. Convert confusing macros in multixact.c to static inline functions

  10. Index SLRUs by 64-bit integers rather than by 32-bit integers

  11. Cope with possible failure of the oldest MultiXact to exist.

HI Maxim Orlov Heikki Linnakangas
    Thank you for working on it,A few more days is a code freeze.It seems
like things have been quiet for a while, but I believe implementing xid64
is absolutely necessary. For instance, there’s often concern about
performance jitter caused by frequent freezes. If xid64 is implemented, the
freeze  process can be smoother.



Thanks

On Fri, Mar 7, 2025 at 7:30 PM Maxim Orlov <orlovmg@gmail.com> wrote:

> Here is a rebase, v14.
>
> --
> Best regards,
> Maxim Orlov.
>