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Robert Haas b4e0741727 Avoid re-checking for visibility map extension too frequently. 
When testing bits (but not when setting or clearing them), we now
won't check whether the map has been extended.  This significantly
improves performance in the case where the visibility map doesn't
exist yet, by avoiding an extra system call per tuple.  To make
sure backends notice eventually, send an smgr inval on VM extension.

Dean Rasheed, with minor modifications by me.
2012-02-01 20:35:42 -05:00
config Enable compiling with the mingw-w64 32 bit compiler. 2011-12-10 15:35:41 -05:00
contrib Implement dry-run mode for pg_archivecleanup 2012-02-01 14:18:12 -03:00
doc initdb: Add options --auth-local and --auth-host 2012-02-01 21:18:55 +02:00
src Avoid re-checking for visibility map extension too frequently. 2012-02-01 20:35:42 -05:00
.gitignore Add gitignore for mingw/cygwin build outputs 2011-06-09 18:11:47 +02:00
aclocal.m4
configure Use __sync_lock_test_and_set() for spinlocks on ARM, if available. 2012-01-07 15:38:52 -05:00
configure.in Use __sync_lock_test_and_set() for spinlocks on ARM, if available. 2012-01-07 15:38:52 -05:00
COPYRIGHT Update copyright notices for year 2012. 2012-01-01 18:01:58 -05:00
GNUmakefile.in Build src/ before contrib/ in make world 2011-08-24 21:34:49 +03:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00

README 

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.  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
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.