Re: Query completed in < 1s in PG 9.1 and ~ 700s in PG 9.2

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Merlin Moncure <mmoncure(at)gmail(dot)com>
Cc: Rodrigo Rosenfeld Rosas <rr(dot)rosas(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Query completed in < 1s in PG 9.1 and ~ 700s in PG 9.2
Date: 2012-11-06 21:18:08
Message-ID: 20167.1352236688@sss.pgh.pa.us
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Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> hm, wouldn't timing the time to generate a raw EXPLAIN (that is,
> without ANALYZE) give a rough estimate of planning time? better to
> rule it out before OP goes to the trouble...

Well, we still wouldn't know *why* there was a problem ...

regards, tom lane

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