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Since 6bc8ef0b, InitializeMaxBackends() has used max_worker_processes instead of adapting MaxBackends to the number of background workers registered by modules loaded in shared_preload_libraries (at this time, bgworkers were only static, but gained dynamic capabilities as a matter of supporting parallel queries meaning that a control cap was necessary). Some comments referred to the past registration logic, making them confusing and incorrect, so fix these. Some of the out-of-core modules that could be loaded in this path sometimes like to manipulate dynamically some of the resource-related GUCs for their own needs, this commit adds a note about that. Author: Nathan Bossart Discussion: https://postgr.es/m/20220127181815.GA551692@nathanxps13
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.