Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <pgsql-general-owner+archive@lists.postgresql.org>)
	id 1gF7xn-0002U2-2T
	for pgsql-general@arkaria.postgresql.org; Wed, 24 Oct 2018 01:27:59 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <pgsql-general-owner+archive@lists.postgresql.org>)
	id 1gF7xj-00049H-9V
	for pgsql-general@arkaria.postgresql.org; Wed, 24 Oct 2018 01:27:55 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <bruno@wolff.to>)
	id 1gF7xj-00049A-1M
	for pgsql-general@lists.postgresql.org; Wed, 24 Oct 2018 01:27:55 +0000
Received: from wolff.to ([98.103.208.27])
	by magus.postgresql.org with smtp (Exim 4.89)
	(envelope-from <bruno@wolff.to>)
	id 1gF7xb-00084C-Qf
	for pgsql-general@lists.postgresql.org; Wed, 24 Oct 2018 01:27:54 +0000
Received: (qmail 27563 invoked by uid 500); 24 Oct 2018 01:23:14 -0000
Date: Tue, 23 Oct 2018 20:23:14 -0500
From: Bruno Wolff III <bruno@wolff.to>
To: pgsql-general@lists.postgresql.org
Subject: Should pg 11 use a lot more memory building an spgist index?
Message-ID: <20181024012314.GA27428@wolff.to>
Mail-Followup-To: Bruno Wolff III <bruno@wolff.to>,
	pgsql-general@lists.postgresql.org
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
User-Agent: Mutt/1.10.1 (2018-07-13)
List-Id: <pgsql-general.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-general@lists.postgresql.org>
List-Owner: <mailto:pgsql-general-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-general>
Precedence: bulk

While reloading a database cluster to move from 10.5 to 11, I'm getting 
out of memory crashes that I did see when doing reloads on pg 10.
The statement flagged in the log is this:
2018-10-23 16:44:34.815 CDT [126839] STATEMENT:  ALTER TABLE ONLY public.iplocation
	    ADD CONSTRAINT overlap EXCLUDE USING spgist (network WITH &&);

iplocation has 4398722 rows.

This is geolite data where the networks are a partial covering of the total 
address spaces with no overlaps.

Should I expect to have to make config changes to make this work?