3d0b4b1068
Our testing showed that this is helpful at sufficiently high contention levels and doesn't hurt performance on smaller machines. The new TAS_SPIN macro for AArch64 is identical to the ones added for PPC and x86_64 (see commitsbc2a050d40andb03d196be0). Reported-by: Salvatore Dipietro Reviewed-by: Jingtang Zhang, Andres Freund Tested-by: Tom Lane Discussion: https://postgr.es/m/ZxgDEb_VpWyNZKB_%40nathan
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/.