2201d801b0
On a big NUMA machine with 1000 connections in saturation load there was a performance regression due to spinlock contention, for acquiring values which were never used. Just fill with dummy values if we're not going to use them. This patch has not been benchmarked yet on a big NUMA machine, but it seems like a good idea on general principle, and it seemed to prevent an apparent 2.2% regression on a single-socket i7 box running 200 connections at saturation load.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.