pg.ddx.io  pgsql-admin@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Greg Smith <greg@2ndQuadrant.com>
To: pgsql-admin@postgresql.org
Subject: Re: about shared_buffer and kernel.shmmax
Date: Thu, 21 Jun 2012 03:20:45 -0400
Message-ID: <4FE2CB4D.4000108@2ndQuadrant.com> (raw)
In-Reply-To: <4FE29737.2040405@edgesoft.cn>
References: <4FE29737.2040405@edgesoft.cn>

On 06/20/2012 11:38 PM, wangqi wrote:
> shared_buffer maximum limit is ?
> I set shared_buffer more than 250G, I got error at startup pg.

There's not much evidence that values larger than 16GB are really
productive.  You really do not want put all their memory in just that
one place.

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.com



view thread (3+ messages)

Message-ID: <4FE2CB4D.4000108@2ndQuadrant.com>
Permalink:  ../4FE2CB4D.4000108@2ndQuadrant.com/
Also on:    postgresql.org/message-id/4FE2CB4D.4000108@2ndQuadrant.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: greg@2ndQuadrant.com
  Subject: Re: about shared_buffer and kernel.shmmax
  In-Reply-To: <4FE2CB4D.4000108@2ndQuadrant.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