3b8ba163d0
just the significant fields of FunctionCallInfoData, rather than MemSet'ing the whole struct to zero. Unused positions in the arg[] array will thereby contain garbage rather than zeroes. This buys back some of the performance hit from increasing FUNC_MAX_ARGS. Also tweak tuplesort.c code for more speed by marking some routines 'inline'. All together these changes speed up simple sorts, like count(distinct int4column), by about 25% on a P4 running RH Linux 7.2.
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 several language bindings, including C, Perl, Python, and Tcl, as well as drivers for JDBC. As of v7.3, the ODBC and C++ interfaces have been moved over to the PostgreSQL Projects WebSite @ http://gborg.postgresql.org. 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 ftp://ftp.postgresql.org/pub/. For more information look at our web site located at http://www.postgresql.org/.