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Michael Paquier 76def4cdd7 Add WAL data to backend statistics ... This commit adds per-backend WAL statistics, providing the same information as pg_stat_wal, except that it is now possible to know how much WAL activity is happening in each backend rather than an overall aggregate of all the activity. Like pg_stat_wal, the implementation relies on pgWalUsage, tracking the difference of activity between two reports to pgstats. This data can be retrieved with a new system function called pg_stat_get_backend_wal(), that returns one tuple based on the PID provided in input. Like pg_stat_get_backend_io(), this is useful when joined with pg_stat_activity to get a live picture of the WAL generated for each running backend, showing how the activity is [un]balanced. pgstat_flush_backend() gains a new flag value, able to control the flush of the WAL stats. This commit relies mostly on the infrastructure provided by 9aea73fc61, that has introduced backend statistics. Bump catalog version. A bump of PGSTAT_FILE_FORMAT_ID is not required, as backend stats do not persist on disk. Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Xuneng Zhou <xunengzhou@gmail.com> Discussion: https://postgr.es/m/Z3zqc4o09dM/Ezyz@ip-10-97-1-34.eu-west-3.compute.internal		6 months ago
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backend	Add WAL data to backend statistics	6 months ago
bin	Don't convert to and from floats in pg_dump.	6 months ago
common	Change relpath() et al to return path by value	7 months ago
fe_utils	Get rid of O(N^2) script-parsing overhead in pgbench.	7 months ago
include	Add WAL data to backend statistics	6 months ago
interfaces	ecpg: Fix compiler warning in ecpg build with Meson.	6 months ago
makefiles	Add support for OAUTHBEARER SASL mechanism	7 months ago
pl	Include column name in build_attrmap_by_position's error reports.	6 months ago
port	Assert that wrapper_handler()'s argument is within expected range.	6 months ago
template	…
test	Add WAL data to backend statistics	6 months ago
timezone	Update time zone data files to tzdata release 2025a.	8 months ago
tools	Compress TID lists when writing GIN tuples to disk	6 months ago
tutorial	Doc: simplify the tutorial's window-function examples.	8 months ago
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Add support for OAUTHBEARER SASL mechanism	7 months ago
Makefile.shlib	…
meson.build	Update copyright for 2025	8 months ago
nls-global.mk	…