Horton

Add system view pg_wait_events

Michael Paquier <michael@paquier.xyz>

View on postgr.es
Commit: 1e68e43d3f0ff1dcf4a5926f9d6336b86bda034d
Author: Michael Paquier <michael@paquier.xyz>
Date: 2023-08-20T06:35:02Z
Releases: 17.0 
Add system view pg_wait_events

This new view, wrapped around a SRF, shows some information known about
wait events, as of:
- Name.
- Type (Activity, I/O, Extension, etc.).
- Description.

All the information retrieved comes from wait_event_names.txt, and the
description is the same as the documentation with filters applied to
remove any XML markups.  This view is useful when joined with
pg_stat_activity to get the description of a wait event reported.

Custom wait events for extensions are included in the view.

Original idea by Yves Colin.

Author: Bertrand Drouvot
Reviewed-by: Kyotaro Horiguchi, Masahiro Ikeda, Tom Lane, Michael
Paquier
Discussion: https://postgr.es/m/0e2ae164-dc89-03c3-cf7f-de86378053ac@gmail.com

Files

PathChange+/−
doc/src/sgml/monitoring.sgml modified +13 −1
doc/src/sgml/system-views.sgml modified +64 −0
src/backend/catalog/system_views.sql modified +3 −0
src/backend/Makefile modified +2 −1
src/backend/utils/activity/generate-wait_event_types.pl modified +52 −4
src/backend/utils/activity/.gitignore modified +1 −0
src/backend/utils/activity/Makefile modified +6 −2
src/backend/utils/activity/meson.build modified +1 −0
src/backend/utils/activity/wait_event.c modified +40 −0
src/backend/utils/activity/wait_event_funcs.c added +93 −0
src/include/catalog/pg_proc.dat modified +6 −0
src/include/utils/meson.build modified +2 −2
src/include/utils/wait_event.h modified +1 −0
src/test/modules/worker_spi/t/001_worker_spi.pl modified +6 −0
src/test/regress/expected/rules.out modified +4 −0
src/test/regress/expected/sysviews.out modified +16 −0
src/test/regress/sql/sysviews.sql modified +4 −0
src/tools/msvc/clean.bat modified +1 −0
src/tools/msvc/Solution.pm modified +2 −1

Documentation touched

Discussion