From: Jim C. Nasby <jnasby@pervasive.com>
To: Michael Fuhr <mike@fuhr.org>
Cc: Ruben Rubio Rey <ruben@rentalia.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Posrgres speed problem
Date: Mon, 12 Jun 2006 10:23:54 -0500
Message-ID: <20060612152354.GT34196@pervasive.com> (raw)
In-Reply-To: <20060612150506.GA50764@winnie.fuhr.org>
References: <448D7C81.1000108@rentalia.com>
<20060612150506.GA50764@winnie.fuhr.org>
On Mon, Jun 12, 2006 at 09:05:06AM -0600, Michael Fuhr wrote:
> On Mon, Jun 12, 2006 at 04:38:57PM +0200, Ruben Rubio Rey wrote:
> > I have two similar servers, one in production and another for testing
> > purposes.
> > Databases are equal (with a difference of some hours)
> >
> > In the testing server, an sql sentence takes arround 1 sec.
> > In production server (low server load) takes arround 50 secs, and uses
> > too much resources.
> >
> > Explain analyze takes too much load, i had to cancel it!
>
> The EXPLAIN ANALYZE output would be helpful, but if you don't want
> to run it to completion then please post the output of EXPLAIN
> ANALYZE for the fast system and EXPLAIN (without ANALYZE) for the
> slow one.
>
> As someone else asked, are you running ANALYZE regularly? What
> about VACUUM?
For the next vacuum, can you add the -v (verbose) switch and email the
last few lines of output?
INFO: free space map contains 39 pages in 56 relations
DETAIL: A total of 896 page slots are in use (including overhead).
896 page slots are required to track all free space.
Current limits are: 20000 page slots, 1000 relations, using 223 KB.
VACUUM
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, mike@fuhr.org, ruben@rentalia.com
Subject: Re: Posrgres speed problem
In-Reply-To: <20060612152354.GT34196@pervasive.com>
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