pg.ddx.io  pgsql-admin@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Kevin Grittner <kgrittn@ymail.com>
To: Oliver <ofabelo@gmail.com>
Cc: Jan Lentfer <Jan.Lentfer@web.de>
Cc: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Re: Postgresql not getting assigned memory
Date: Fri, 20 Jun 2014 06:02:39 -0700
Message-ID: <1403269359.63758.YahooMailNeo@web122304.mail.ne1.yahoo.com> (raw)
In-Reply-To: <CALQkqm-ni-3UtBUrGJmeq-pr2+2As4YZeMgMzN8BO5pE_s1uuQ@mail.gmail.com>
References: <CALQkqm_BqAU9Nh=morY6ON02fGjZ228YfAEkBeqZwA5QPjh5wg@mail.gmail.com>
	<8b8abf0c137c0dac2d29c163537a7ea2@imap.lan.net>
	<CALQkqm-69GZtNU+sxehM7PAYS1SPjjN_N3=b2diG4UFTA3zHWA@mail.gmail.com>
	<1403268386.87807.YahooMailNeo@web122301.mail.ne1.yahoo.com>
	<CALQkqm-ni-3UtBUrGJmeq-pr2+2As4YZeMgMzN8BO5pE_s1uuQ@mail.gmail.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-admin>

Oliver <ofabelo@gmail.com> wrote:

> I only want be sure about shared_buffers parameter. What I set
> there, is it memory that postgresql will use (will allocate)
> initially (when it is started) or memory until that postgresql
> can reach of the server?

It is part of the main shared memory segment allocated when the
database service starts, and to which every backend connects.  Each
backend makes other allocations from the OS, which are not
consrtained by this setting.

PostgreSQL goes through the OS filesystems, so the OS cache and
buffers are also used for PostgreSQL data.

--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


-- 
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin



view thread (12+ messages)  latest in thread

Message-ID: <1403269359.63758.YahooMailNeo@web122304.mail.ne1.yahoo.com>
Permalink:  ../1403269359.63758.YahooMailNeo@web122304.mail.ne1.yahoo.com/
Also on:    postgresql.org/message-id/1403269359.63758.YahooMailNeo@web122304.mail.ne1.yahoo.com

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-admin@postgresql.org
  Cc: kgrittn@ymail.com, ofabelo@gmail.com, Jan.Lentfer@web.de
  Subject: Re: Postgresql not getting assigned memory
  In-Reply-To: <1403269359.63758.YahooMailNeo@web122304.mail.ne1.yahoo.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox