Received: from localhost (unknown [200.46.204.183])
	by developer.postgresql.org (Postfix) with ESMTP id 13BAF2E0314
	for <pgsql-performance-postgresql.org@developer.postgresql.org>;
	Mon, 31 Mar 2008 18:24:22 -0300 (ADT)
Received: from developer.postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024)
	with ESMTP id 57620-02
	for <pgsql-performance-postgresql.org@developer.postgresql.org>;
	Mon, 31 Mar 2008 18:24:22 -0300 (ADT)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.5
Received: from ptb-relay03.plus.net (ptb-relay03.plus.net [212.159.14.214])
	by developer.postgresql.org (Postfix) with ESMTP id 2D5262E0312
	for <pgsql-performance@postgresql.org>;
	Mon, 31 Mar 2008 18:24:18 -0300 (ADT)
Received: from [80.229.150.39] (helo=mansionfamily.plus.com)
	by ptb-relay03.plus.net with esmtp (Exim) id 1JgRUF-0004fB-LX
	for pgsql-performance@postgresql.org; Mon, 31 Mar 2008 22:24:15 +0100
Received: from [192.168.0.89] ([192.168.0.89]:1324)
	by mansionfamily.plus.com with [XMail 1.22 ESMTP Server]
	id <S150BF> for <pgsql-performance@postgresql.org> from
	<james@mansionfamily.plus.com>; Mon, 31 Mar 2008 22:29:12 +0100
Message-ID: <47F1576E.9060707@mansionfamily.plus.com>
Date: Mon, 31 Mar 2008 22:28:14 +0100
From: James Mansion <james@mansionfamily.plus.com>
Organization: MsgWare
User-Agent: Thunderbird 2.0.0.0 (Windows/20070326)
MIME-Version: 1.0
To: Mark Mielke <mark@mark.mielke.cc>
CC: pgsql-performance@postgresql.org
Subject: Re: POSIX file updates
References: <47F1413B.40109@mansionfamily.plus.com>
	<47F1436D.4030905@mark.mielke.cc>
In-Reply-To: <47F1436D.4030905@mark.mielke.cc>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Plusnet-Relay: c2ed14daebdb2b026ec097d946542b0a
X-Archive-Number: 200803/533
X-Sequence-Number: 29487

Mark Mielke wrote:
> Is there anything in POSIX that seems to suggest this? :-) (i.e. why 
> are you going under the assumption that the answer is yes - did you 
> read something?)
>
Perhaps it was just this:

http://kevinclosson.wordpress.com/2007/01/18/yes-direct-io-means-concurrent-writes-oracle-doesnt-need-write-ordering/

Whichof course isn't on Sun.