From fa3a022136fc6d7138ad217bfc8ac7e76d6d38f8 Mon Sep 17 00:00:00 2001 From: Fujii Masao Date: Thu, 19 Sep 2024 02:14:10 +0900 Subject: [PATCH] docs: Improve the description of num_timed column in pg_stat_checkpointer. The previous documentation stated that num_timed reflects the number of scheduled checkpoints performed. However, checkpoints may be skipped if the server has been idle, and num_timed counts both skipped and completed checkpoints. This commit clarifies the description to make it clear that the counter includes both skipped and completed checkpoints. Back-patch to v17 where pg_stat_checkpointer was added. Author: Fujii Masao Reviewed-by: Alexander Korotkov Discussion: https://postgr.es/m/9ea77f40-818d-4841-9dee-158ac8f6e690@oss.nttdata.com --- doc/src/sgml/monitoring.sgml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml index 9ca74348c7..eabc4f5d17 100644 --- a/doc/src/sgml/monitoring.sgml +++ b/doc/src/sgml/monitoring.sgml @@ -2978,7 +2978,10 @@ description | Waiting for a newly initialized WAL file to reach durable storage num_timed bigint - Number of scheduled checkpoints that have been performed + Number of scheduled checkpoints due to timeout. + Note that checkpoints may be skipped if the server has been idle + since the last one, and this value counts both completed and + skipped checkpoints