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Andres Freund 418451bfe1 bufmgr: Make it easier to change number of buffer state bits
In an upcoming commit I'd like to change the number of bits for the usage
count (the current max is 5, fitting in three bits, but we reserve four
bits). Until now that required adjusting a bunch of magic constants, now the
constants are defined based on the number of bits reserved.

Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Discussion: https://postgr.es/m/lxzj26ga6ippdeunz6kuncectr5gfuugmm2ry22qu6hcx6oid6@lzx3sjsqhmt6
Discussion: https://postgr.es/m/riivolmg6uzfvpzfn6wjo3ghwt42rcec43ok6mv4oenfg654y7@x7dbposbskwd
2025-02-24 06:23:41 -05:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Add support for OAUTHBEARER SASL mechanism 2025-02-20 16:25:17 +01:00
contrib Fix an issue with index scan using pg_trgm due to char signedness on different architectures. 2025-02-21 10:27:39 -08:00
doc Remove read/sync fields from pg_stat_wal and GUC track_wal_io_timing 2025-02-24 09:51:56 +09:00
src bufmgr: Make it easier to change number of buffer state bits 2025-02-24 06:23:41 -05:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml cirrus: Temporarily fix libcurl link error 2025-02-20 16:25:47 +01:00
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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/.