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Alvaro Herrera 5de890e361
Add EXPLAIN (MEMORY) to report planner memory consumption
This adds a new "Memory:" line under the "Planning:" group (which
currently only has "Buffers:") when the MEMORY option is specified.

In order to make the reporting reasonably accurate, we create a separate
memory context for planner activities, to be used only when this option
is given.  The total amount of memory allocated by that context is
reported as "allocated"; we subtract memory in the context's freelists
from that and report that result as "used".  We use
MemoryContextStatsInternal() to obtain the quantities.

The code structure to show buffer usage during planning was not in
amazing shape, so I (Álvaro) modified the patch a bit to clean that up
in passing.

Author: Ashutosh Bapat
Reviewed-by: David Rowley, Andrey Lepikhov, Jian He, Andy Fan
Discussion: https://www.postgresql.org/message-id/CAExHW5sZA=5LJ_ZPpRO-w09ck8z9p7eaYAqq3Ks9GDfhrxeWBw@mail.gmail.com
2024-01-29 17:53:03 +01:00
config jit: Require at least LLVM 10. 2024-01-25 15:42:34 +13:00
contrib Add EXPLAIN (MEMORY) to report planner memory consumption 2024-01-29 17:53:03 +01:00
doc Add EXPLAIN (MEMORY) to report planner memory consumption 2024-01-29 17:53:03 +01:00
src Add EXPLAIN (MEMORY) to report planner memory consumption 2024-01-29 17:53:03 +01:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml ci: Enable injection points in builds 2024-01-23 12:01:18 +09:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
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meson_options.txt Add backend support for injection points 2024-01-22 10:15:50 +09:00

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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at:
https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source
code can be found at:
https://www.postgresql.org/docs/devel/installation.html

The latest version of this software, and related software, may be
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look at our web site located at https://www.postgresql.org/.