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Tom Lane 2c300c6807 Be smarter about age-counter overflow in formatting.c caches. 
The previous code here simply threw away whatever it knew about cache
entry ages whenever a counter overflow occurred.  Since the counter
is int width and will be bumped once per format function execution,
overflows are not really so rare as to not be worth thinking about.
Instead, let's deal with the situation by halving all the age values,
essentially rescaling the age metric.  In that way, we retain a
pretty accurate (if not quite perfect) idea of which entries are oldest.
2018-10-16 14:57:14 -04:00
config Select appropriate PG_PRINTF_ATTRIBUTE for recent NetBSD. 2018-10-09 11:10:07 -04:00
contrib Improve stability of recently-added regression test case. 2018-10-16 12:01:18 -04:00
doc pgbench: Report errors during run better 2018-10-15 10:34:35 +02:00
src Be smarter about age-counter overflow in formatting.c caches. 2018-10-16 14:57:14 -04:00
.dir-locals.el Update documentation editor setup instructions 2018-07-13 21:23:41 +02:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Add configure infrastructure (--with-llvm) to enable LLVM support. 2018-03-20 17:26:25 -07:00
configure Select appropriate PG_PRINTF_ATTRIBUTE for recent NetBSD. 2018-10-09 11:10:07 -04:00
configure.in Convert some long lists in configure.in to one-line-per-entry style. 2018-10-09 00:04:38 -04:00
COPYRIGHT Update copyright for 2018 2018-01-02 23:30:12 -05:00
GNUmakefile.in Remove unwanted "garbage cleanup" logic in Makefiles. 2018-08-08 14:32:29 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Fix non-GNU makefiles for AIX make. 2017-11-30 00:57:22 -08:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -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:

	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/.