09119238a1
The counters saved from pgWalUsage, used for the difference calculations when flushing the backend WAL stats, are updated when calling pgstat_flush_backend() under PGSTAT_BACKEND_FLUSH_WAL, and not pgstat_report_wal(). The comment updated in this commit referenced the latter, but it is perfectly OK to flush the backend stats independently of the WAL stats. Noticed while looking at this area of the code, introduced by 76def4cdd7c2 as a copy-pasto. Backpatch-through: 18
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.