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Since Windows 10 1703, it is additionally necessary to pass a flag called FILE_MAP_LARGE_PAGES to MapViewOfFile() to enable large pages at map time. This flag is ignored on older versions of Windows, where large pages should still be able to work properly without setting it. Note that the flag would be set only for binaries that knew about it at compile-time, which should be more or less all the Windows environments these days. Since 495ed0e, Windows 10 is the minimum version of Windows supported by Postgres, making this change easy to reason about on HEAD. Per discussion, no backpatch is done for the moment. Reported-by: Okano Naoki Author: Thomas Munro Reviewed-by: Tom Lane, Michael Paquier, Julien Rouhaud Discussion: https://postgr.es/m/17448-0a96583a67edb1f7@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/.