Received: from localhost (unknown [200.46.204.183])
	by mail.postgresql.org (Postfix) with ESMTP id A176D631ADA
	for <pgsql-performance-postgresql.org@mail.postgresql.org>;
	Tue,  6 Jan 2009 22:23:21 -0400 (AST)
Received: from mail.postgresql.org ([200.46.204.86])
	by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024)
	with ESMTP id 08112-03
	for <pgsql-performance-postgresql.org@mail.postgresql.org>;
	Tue,  6 Jan 2009 22:23:18 -0400 (AST)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130])
	by mail.postgresql.org (Postfix) with ESMTP id 835D2631A2D
	for <pgsql-performance@postgresql.org>;
	Tue,  6 Jan 2009 22:23:18 -0400 (AST)
Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1])
	by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id n072NDjK015855;
	Tue, 6 Jan 2009 21:23:13 -0500 (EST)
To: "Frank Joerdens" <frank@joerdens.de>
cc: "Ryan Hansen" <ryan.hansen@brightbuilders.com>,
	pgsql-performance@postgresql.org, "Nic Ferrier" <nic@woome.com>,
	"Mike Rogers" <mikero@woome.com>
Subject: Re: Memory Allocation (8 GB shared buffer limit on Ubuntu Hardy) 
In-reply-to: <7d10d2df0901061820v29755576p75a92bd1282f34c2@mail.gmail.com> 
References: <7d10d2df0901061820v29755576p75a92bd1282f34c2@mail.gmail.com>
Comments: In-reply-to "Frank Joerdens" <frank@joerdens.de>
	message dated "Wed, 07 Jan 2009 03:20:08 +0100"
Date: Tue, 06 Jan 2009 21:23:13 -0500
Message-ID: <15854.1231294993@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none
X-Spam-Level: 
X-Archive-Number: 200901/20
X-Sequence-Number: 32299

"Frank Joerdens" <frank@joerdens.de> writes:
> then I take the request size value from the error and do
> echo 8810725376 > /proc/sys/kernel/shmmax
> and get the same error again.

What about shmall?

			regards, tom lane