c4901a1e03
This avoids a good number of, individually quite fast, system calls in scenarios with many quick queries. Besides the aesthetic benefit of seing fewer superflous system calls with strace, it also improves performance by ~2% measured by pgbench -M prepared -c 96 -j 8 -S (scale 100). Without having benchmarked it, this patch also adjust the windows code, as that makes it easier to unify the unix/windows codepaths in a later patch. There's little reason to diverge in behaviour between the platforms. Discussion: CA+TgmoYc1Zm+Szoc_Qbzi92z2c1vRHZmjhfPn5uC=w8bXv6Avg@mail.gmail.com Reviewed-By: Robert Haas
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/.