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From: Jim Vanns <james.vanns@framestore.com>
To: Andrew Dunstan <andrew@dunslane.net>
Cc: Jim Vanns <james.vanns@framestore.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Odd blocking (or massively latent) issue - even with EXPLAIN
Date: Mon, 23 Jul 2012 15:47:22 +0100
Message-ID: <1343054842.12579.112.camel@sys367.ldn.framestore.com> (raw)
In-Reply-To: <500D5755.30803@dunslane.net>
References: <1343032905.12579.3.camel@sys367.ldn.framestore.com>
	<500D5755.30803@dunslane.net>

On Mon, 2012-07-23 at 09:53 -0400, Andrew Dunstan wrote:
> On 07/23/2012 04:41 AM, Jim Vanns wrote:
> > We're seeing SELECT statements and even EXPLAIN (no ANAYLZE)
> > statements hang indefinitely until *something* (we don't know what)
> > releases some kind of resource or no longer becomes a massive bottle
> > neck. These are the symptoms.
> 
> I have seen this sort of behaviour on systems with massive catalogs 
> (millions of tables and indexes). Could that be your problem?

Possibly. I'm not familiar with the catalogs. I'll look into that.

Thanks,

Jim

> 
> cheers
> 
> andrew
> 

-- 
Jim Vanns
Systems Programmer
Framestore




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