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

Commits on Jun 10, 2026

  1. Report downstream sent bytes in pg_stat_replication_slots 

    pg_stat_replication_slots currently tracks bytes added to the reorder
buffer, but it does not track bytes sent to downstream consumers.
Add sent_bytes to expose that metric and help diagnose replication
throughput issues caused by a slow or stalled downstream consumer.

Author: Ashutosh Bapat <[email protected]>
Author: Ashutosh Sharma <[email protected]>
Reviewed-by: Shveta Malik <[email protected]>
Reviewed-by: Bertrand Drouvot <[email protected]>
Reviewed-by: Amit Kapila <[email protected]>
Reviewed-by: Ashutosh Sharma <[email protected]>
Reviewed-by: Andres Freund <[email protected]>
Discussion: https://www.postgresql.org/message-id/CAExHW5s6KntzUyUoMbKR5dgwRmdV2Ay_2+AnTgYGAzo=Qv61wA@mail.gmail.com
    @ashucoek
    ashucoek authored and Commitfest Bot committed Jun 10, 2026
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  2. 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, 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

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.

Author: Ashutosh Bapat <[email protected]>
Reviewed-by: Shveta Malik <[email protected]>
Reviewed-by: Bertrand Drouvot <[email protected]>
Reviewed-by: Amit Kapila <[email protected]>
Reviewed-by: Ashutosh Sharma <[email protected]>
Reviewed-by: Andres Freund <[email protected]>
Discussion: https://www.postgresql.org/message-id/CAExHW5s6KntzUyUoMbKR5dgwRmdV2Ay_2+AnTgYGAzo=Qv61wA@mail.gmail.com
    @ashucoek
    ashucoek authored and Commitfest Bot committed Jun 10, 2026
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  3. [CF 5877] v20260316 - 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/CAE9k0PmBdxB_bpWAT9V9TqkKzRCbPTOBTU3f5OtRVhZ64VKFhw@mail.gmail.com
Author(s): Ashutosh Bapat
    Commitfest Bot committed Jun 10, 2026
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    a59323b View commit details
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