From 74604a37f2f9eb6e626a4ff3cedd02aef5a2ad59 Mon Sep 17 00:00:00 2001
From: Michael Paquier
Date: Fri, 27 Oct 2023 11:16:39 +0900
Subject: Remove buffers_backend and buffers_backend_fsync from
pg_stat_checkpointer
Two attributes related to checkpointer statistics are removed in this
commit:
- buffers_backend, that counts the number of buffers written directly by
a backend.
- buffers_backend_fsync, that counts the number of times a backend had
to do fsync() by its own.
These are actually not checkpointer properties but backend properties.
Also, pg_stat_io provides a more accurate and equivalent report of these
numbers, by tracking all the I/O stats related to backends, including
writes and fsyncs, so storing them in pg_stat_checkpointer was
redundant.
Thanks also to Robert Haas and Amit Kapila for their input.
Bump catalog version.
Author: Bharath Rupireddy
Reviewed-by: Bertrand Drouvot, Andres Freund
Discussion: https://postgr.es/m/20230210004604.mcszbscsqs3bc5nx@awork3.anarazel.de
---
doc/src/sgml/monitoring.sgml | 20 --------------------
1 file changed, 20 deletions(-)
(limited to 'doc/src')
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 3f49ff79f34..9fea60b5b21 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -2953,26 +2953,6 @@ description | Waiting for a newly initialized WAL file to reach durable storage
-
-
- buffers_backend bigint
-
-
- Number of buffers written directly by a backend
-
-
-
-
-
- buffers_backend_fsync bigint
-
-
- Number of times a backend had to execute its own
- fsync call (normally the background writer handles those
- even when the backend does its own write)
-
-
-
buffers_alloc bigint
--
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