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Michael Paquier 2d31da5271 doc: Add new section describing fast-path locking
Fast-path locking is referenced by pg_stat_lock.fastpath_exceeded, by
pg_locks.fastpath, and in the GUC max_locks_per_transaction.  However,
the documentation has never described in details how this works; one
would need to look at the internals of lock.c, mostly around
EligibleForRelationFastPath().

This commit adds a new subsection called "Fast-Path Locking" to the area
dedicated to locks, with the three places mentioned above linking to it.

Author: Tatsuya Kawata <kawatatatsuya0913@gmail.com>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CAHza6qdKo9dcPy70QBi88vpqhS2gYWViS8=Uj=-+QQbR=ONgSQ@mail.gmail.com
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doc doc: Add new section describing fast-path locking 2026-07-01 10:08:26 +09:00
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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/.