Received: from localhost (maia-2.hub.org [200.46.204.187])
	by postgresql.org (Postfix) with ESMTP id F1F259FA0CC
	for <pgsql-performance-postgresql.org@postgresql.org>;
	Tue, 19 Dec 2006 12:59:58 -0400 (AST)
Received: from postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.204.187]) (amavisd-new, port 10024)
	with ESMTP id 05389-07-2
	for <pgsql-performance-postgresql.org@postgresql.org>;
	Tue, 19 Dec 2006 12:59:23 -0400 (AST)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.4
Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130])
	by postgresql.org (Postfix) with ESMTP id 2695F9F946C
	for <pgsql-performance@postgresql.org>;
	Tue, 19 Dec 2006 12:59:17 -0400 (AST)
Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1])
	by sss.pgh.pa.us (8.13.6/8.13.6) with ESMTP id kBJGxFAx029552;
	Tue, 19 Dec 2006 11:59:15 -0500 (EST)
To: "Steven Flatt" <steven.flatt@gmail.com>
cc: pgsql-performance@postgresql.org
Subject: Re: Insertion to temp table deteriorating over time 
In-reply-to: <357fa7590612190743lc9201fey6519737114881080@mail.gmail.com> 
References: <357fa7590612130844q58ef3ca5q31e164f9b006e0fc@mail.gmail.com>
	<12508.1166206006@sss.pgh.pa.us>
	<357fa7590612151026t4ae033f6w5367cac9d0b67064@mail.gmail.com>
	<13947.1166209788@sss.pgh.pa.us>
	<357fa7590612151121x5f95102fj21a96b1bdc7eb002@mail.gmail.com>
	<20792.1166211026@sss.pgh.pa.us>
	<357fa7590612180951q3da4c840l27caa82475444cfb@mail.gmail.com>
	<19298.1166464855@sss.pgh.pa.us>
	<357fa7590612181506r69a17e37x271623007f27c877@mail.gmail.com>
	<17718.1166515736@sss.pgh.pa.us>
	<357fa7590612190743lc9201fey6519737114881080@mail.gmail.com>
Comments: In-reply-to "Steven Flatt" <steven.flatt@gmail.com>
	message dated "Tue, 19 Dec 2006 10:43:13 -0500"
Date: Tue, 19 Dec 2006 11:59:15 -0500
Message-ID: <29551.1166547555@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Archive-Number: 200612/476
X-Sequence-Number: 22532

"Steven Flatt" <steven.flatt@gmail.com> writes:
>  I can't reproduce the problem that way either (or when using a server-side
> PLpgSQL function to do similar).  It looks like you have to go through an
> ODBC connection, with the looping done on the client side.  Each individual
> insert to the temp table needs to be sent over the connection and this is
> what degrades over time.  I can reproduce on 7.4.6 and 8.1.4.  I have a
> small C program to do this which I can send you offline if you're
> interested.

Please.

			regards, tom lane