Horton

Re: per backend WAL statistics

Bertrand Drouvot <bertranddrouvot.pg@gmail.com>

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From: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: Andres Freund <andres@anarazel.de>, pgsql-hackers@lists.postgresql.org, Nazir Bilal Yavuz <byavuz81@gmail.com>
Date: 2025-02-24T09:07:39Z
Lists: pgsql-hackers

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Hi,

On Wed, Feb 19, 2025 at 07:28:49AM +0900, Michael Paquier wrote:
> On Tue, Feb 18, 2025 at 10:45:29AM +0000, Bertrand Drouvot wrote:
> > Agree, done that way in the dedicated thread ([1]).
> > 
> > [1]: https://www.postgresql.org/message-id/flat/Z7RkQ0EfYaqqjgz/%40ip-10-97-1-34.eu-west-3.compute.internal
> 
> Thanks for splitting this part into its own thread.

Now that 2421e9a51d2 is in, let's resume working in this thread. PFA a rebase to
make the CF bot happy. Nothing has changed since V7, V8 only removes "v7-0001" (
as part of 2421e9a51d2), so that v8-000N is nothing but v7-000(N+1).

Regards,

-- 
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

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