From: Stephen Frost <sfrost@snowman.net>
To: Karl Denninger <karl@denninger.net>
Cc: Rick Otten <rotten@manta.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: average query performance measuring
Date: Tue, 21 Aug 2012 16:27:02 -0400
Message-ID: <20120821202702.GO1267@tamriel.snowman.net> (raw)
In-Reply-To: <5033E60A.1030808@denninger.net>
References: <362605510214004CB3313A03D3D697DE5508FF27@cmhvm005>
<20120821185316.GN1267@tamriel.snowman.net>
<5033E60A.1030808@denninger.net>
Karl,
* Karl Denninger (karl@denninger.net) wrote:
> That looks EXTREMELY useful and I'm looking forward to checking it out
> in 9.2; I have asked a similar question about profiling actual queries
> in the past and basically it came down to "turn on explain or run a
> separate explain yourself since the app knows what's similar and what's
> not", which of course has hideous performance implications (as the query
> basically executes twice.)
Just to clarify one thing- if your application is currently using
prepared queries for everything, you can probably use the existing
contrib module. The difference is that, with 9.2, it'll actually do
normalization of non-PREPARED queries and will include some additional
statistics and information.
Thanks,
Stephen
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To: pgsql-performance@postgresql.org
Cc: sfrost@snowman.net, karl@denninger.net, rotten@manta.com
Subject: Re: average query performance measuring
In-Reply-To: <20120821202702.GO1267@tamriel.snowman.net>
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