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In the large DO block, collect row TIDs into array variables instead of creating and dropping a pile of temporary tables. In a normal build, this reduces the brin test script's runtime from about 1.1 sec to 0.4 sec on my workstation. That's not all that exciting perhaps, but in a CLOBBER_CACHE_ALWAYS test build, the runtime drops from 20 min to 17 min, which is a little more useful. In combination with some other changes I plan to propose, this will help provide a noticeable reduction in cycle time for CLOBBER_CACHE_ALWAYS buildfarm critters.
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/.