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| author | Michael Paquier <michael@paquier.xyz> | 2025-03-19 08:03:06 +0900 |
|---|---|---|
| committer | Michael Paquier <michael@paquier.xyz> | 2025-03-19 08:03:06 +0900 |
| commit | 6d3ea48ff1aea5fb1ccfed69424bf93a8643b4a4 (patch) | |
| tree | 3dc50784b44d90f27cd9360821a85dbc76fbfa90 /src/backend/commands/explain.c | |
| parent | 7fb418f020815a146c5c9f33e3b344ea9d6df3c7 (diff) | |
| download | postgresql-6d3ea48ff1aea5fb1ccfed69424bf93a8643b4a4.tar.gz postgresql-6d3ea48ff1aea5fb1ccfed69424bf93a8643b4a4.zip | |
Optimize check for pending backend IO stats
This commit changes the backend stats code so as we rely on a single
boolean rather than a repeated check based on pg_memory_is_all_zeros()
in the code, making it cheaper should PgStat_PendingIO get bigger in
size.
The frequency of backend stats reports is not a bottleneck, but there is
no reason to not make that cheaper, and the logic is simple as the only
entry points updating backend IO stats are pgstat_count_backend_io_op()
and pgstat_count_backend_io_op_time().
Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Xuneng Zhou <xunengzhou@gmail.com>
Discussion: https://postgr.es/m/Z8WYf1jyy4MwOveQ@ip-10-97-1-34.eu-west-3.compute.internal
Diffstat (limited to 'src/backend/commands/explain.c')
0 files changed, 0 insertions, 0 deletions