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base repository: postgresql-cfbot/postgresql
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  • 2 commits
  • 24 files changed
  • 2 contributors

Commits on Dec 11, 2025

  1. Report output plugin statistics in pg_stat_replication_slots 

    As of now pg_stat_replication_slots reports statistics about the reorder
buffer, but it does not report output statistics like the amount of data
filtered by the output plugin, amount of data sent downstream or the
number of transactions sent downstream. This statistics is useful when
investigating issues related to a slow downstream.

This commit adds following fields to pg_stat_replication_slots
- filtered_bytes is the amount of changes filtered out by the
  output plugin
- sent_txns is the amount of transactions sent downstream by the
  output plugin
- sent_bytes is the amount of data sent downstream by the output
  plugin.

Filtered bytes are reported next to total_bytes to keep these two
closely related fields together.

Though these counts are stored and maintained by the core, they require
the output plugin to return correct values to the relevant callbacks.
This has been added as note in the documentation. In order to aid
debugging descripancies in these counter, name of the output plugin is
added to the view for an easy reference.

total_bytes and total_txns are the only fields remaining unqualified -
they do not convey what those bytes and txns are. Hence rename them
total_wal_bytes and total_wal_txns respectively to indicate that those
counts come from WAL stream.

Author: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Shveta Malik <shveta.malik@gmail.com>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Ashutosh Sharma <ashu.coek88@gmail.com>
Discussion: https://www.postgresql.org/message-id/CAExHW5s6KntzUyUoMbKR5dgwRmdV2Ay_2+AnTgYGAzo=Qv61wA@mail.gmail.com
    @ashutosh-bapat
    ashutosh-bapat authored and Commitfest Bot committed Dec 11, 2025
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  2. [CF 5877] v20251211 - Report bytes and transactions actually sent dow… 

    …ntream

This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5877

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/CAExHW5v-WNfpi4+kE7OA0J5PfPvAd9u=ErhRFXR4xu7OAxFVow@mail.gmail.com
Author(s): Ashutosh Bapat
    Commitfest Bot committed Dec 11, 2025
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