Horton

Re: per backend WAL statistics

Nazir Bilal Yavuz <byavuz81@gmail.com>

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From: Nazir Bilal Yavuz <byavuz81@gmail.com>
To: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, Andres Freund <andres@anarazel.de>, pgsql-hackers@lists.postgresql.org
Date: 2025-02-17T07:08:43Z
Lists: pgsql-hackers 
Hi,

Thank you for working on this!

On Mon, 17 Feb 2025 at 09:59, Bertrand Drouvot
<bertranddrouvot.pg@gmail.com> wrote:
>
> There is still something that would simplify what is done here: it's the
> "the elimination of the write & sync columns for pg_stat_wal" mentioned in [2].
>
> I'll add it in the new patch serie for this thread (that simplifies the new
> pg_stat_wal_build_tuple() among other things) unless Nazir beat me to it.
>
> [2]: https://www.postgresql.org/message-id/Z6L3ZNGCljZZouvN%40paquier.xyz

I am working on some other stuff right now. Please feel free to work on it.

-- 
Regards,
Nazir Bilal Yavuz
Microsoft

Commits

  1. Fix use-after-free in pgstat_fetch_stat_backend_by_pid()

  2. Remove initialization from PendingBackendStats

  3. Add WAL data to backend statistics

  4. Improve check for detection of pending data in backend statistics

  5. Fix some gaps in pg_stat_io with WAL receiver and WAL summarizer

  6. Handle auxiliary processes in SQL functions of backend statistics

  7. Invent pgstat_fetch_stat_backend_by_pid()

  8. Refactor code of pg_stat_get_wal() building result tuple

  9. Adding new PgStat_WalCounters structure in pgstat.h

  10. Remove pgstat_flush_wal()

  11. Refactor some code related to backend statistics

  12. Add backend-level statistics to pgstats