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When BUFFERS option is enabled, EXPLAIN command includes the information on buffer usage during each plan node, in its output. In addition to that, this commit makes EXPLAIN command include also the information on buffer usage during planning phase, in its output. This feature makes it easier to discern the cases where lots of buffer access happen during planning. This commit revives the original commit ed7a509571 that was reverted by commit 19db23bcbd. The original commit had to be reverted because it caused the regression test failure on the buildfarm members prion and dory. But since commit c0885c4c30 got rid of the caues of the test failure, the original commit can be safely introduced again. Author: Julien Rouhaud, slightly revised by Fujii Masao Reviewed-by: Justin Pryzby Discussion: https://postgr.es/m/16109-26a1a88651e90608@postgresql.org
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: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.