Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UXTZo-00045D-M0 for pgsql-performance@arkaria.postgresql.org; Wed, 01 May 2013 09:43:52 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1UXTZo-0001Zn-2V for pgsql-performance@arkaria.postgresql.org; Wed, 01 May 2013 09:43:52 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UXTZm-0001Zf-3j for pgsql-performance@postgresql.org; Wed, 01 May 2013 09:43:50 +0000 Received: from [2404:130:0:10::40:2] (helo=mail.catalyst.net.nz) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UXTZg-0006Ss-V5 for pgsql-performance@postgresql.org; Wed, 01 May 2013 09:43:48 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.catalyst.net.nz (Postfix) with ESMTP id 7EA3C33A13; Wed, 1 May 2013 21:43:38 +1200 (NZST) X-Virus-Scanned: Debian amavisd-new at catalyst.net.nz Received: from mail.catalyst.net.nz ([127.0.0.1]) by localhost (bertrand.catalyst.net.nz [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u9EVBJhiLKY2; Wed, 1 May 2013 21:43:37 +1200 (NZST) Received: from [192.168.1.64] (122-60-64-230.jetstream.xtra.co.nz [122.60.64.230]) (Authenticated sender: mark.kirkwood) by mail.catalyst.net.nz (Postfix) with ESMTPSA id BC20431F18; Wed, 1 May 2013 21:43:37 +1200 (NZST) Message-ID: <5180E3C8.3010201@catalyst.net.nz> Date: Wed, 01 May 2013 21:43:36 +1200 From: Mark Kirkwood User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130404 Thunderbird/17.0.5 MIME-Version: 1.0 To: Gavin Flower CC: "pgsql-performance@postgresql.org" Subject: Re: In progress INSERT wrecks plans on table References: <5179E77B.7050601@catalyst.net.nz> <5179ECC5.2010206@archidevsys.co.nz> <5179F259.3010509@catalyst.net.nz> <5179F5C6.8070702@archidevsys.co.nz> In-Reply-To: <5179F5C6.8070702@archidevsys.co.nz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2404:130:0:10::40:2 (failed) X-Pg-Spam-Score: -1.1 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 26/04/13 15:34, Gavin Flower wrote: > On 26/04/13 15:19, Mark Kirkwood wrote: >> While in general you are quite correct - in the above case >> (particularly as I've supplied a test case) it should be pretty >> obvious that any moderately modern version of postgres on any >> supported platform will exhibit this. > > While I admit that I did not look closely at your test case - I am aware > that several times changes to Postgres from one minor version to > another, can have drastic unintended side effects (which might, or might > not, be relevant to your situation). Besides, it helps sets the scene, > and is one less thing that needs to be deduced. > Indeed - however, my perhaps slightly grumpy reply to your email was based on an impression of over keen-ness to dismiss my message without reading it (!) and a - dare I say it - one size fits all presentation of "here are the hoops to jump through". Now I spent a reasonable amount of time preparing the message and its attendant test case - and a comment such as your based on *not reading it* ...errrm... well lets say I think we can/should do better. I am concerned that the deafening lack of any replies to my original message is a result of folk glancing at your original quick reply and thinking... incomplete problem spec...ignore... when that is not that case - yes I should have muttered "9.2" in the original email, but we have covered that now. Regards Mark -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance