Horton

Add num_done counter to the pg_stat_checkpointer view.

Fujii Masao <fujii@postgresql.org>

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Commit: 559efce1d684069acf234a5cb032acba84e70938
Author: Fujii Masao <fujii@postgresql.org>
Date: 2024-09-30T02:56:05Z
Releases: 18.0 
Add num_done counter to the pg_stat_checkpointer view.

Checkpoints can be skipped when the server is idle. The existing num_timed and
num_requested counters in pg_stat_checkpointer track both completed and
skipped checkpoints, but there was no way to count only the completed ones.

This commit introduces the num_done counter, which tracks only completed
checkpoints, making it easier to see how many were actually performed.

Bump catalog version.

Author: Anton A. Melnikov
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/9ea77f40-818d-4841-9dee-158ac8f6e690@oss.nttdata.com

Files

PathChange+/−
doc/src/sgml/monitoring.sgml modified +10 −1
src/backend/access/transam/xlog.c modified +7 −2
src/backend/catalog/system_views.sql modified +1 −0
src/backend/postmaster/checkpointer.c modified +25 −14
src/backend/utils/activity/pgstat_checkpointer.c modified +2 −0
src/backend/utils/adt/pgstatfuncs.c modified +6 −0
src/include/access/xlog.h modified +1 −1
src/include/catalog/catversion.h modified +1 −1
src/include/catalog/pg_proc.dat modified +5 −0
src/include/pgstat.h modified +1 −0
src/test/regress/expected/rules.out modified +1 −0

Documentation touched

Discussion