From: Douglas J Hunley <doug@hunley.homeip.net>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Richard Huxton <dev@archonet.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: 7 hrs for a pg_restore?
Date: Tue, 19 Feb 2008 14:08:23 -0500
Message-ID: <200802191408.23960.doug@hunley.homeip.net> (raw)
In-Reply-To: <19241.1203445378@sss.pgh.pa.us>
References: <200802191303.58840.doug@hunley.homeip.net>
<47BB1C51.6010203@archonet.com>
<19241.1203445378@sss.pgh.pa.us>
On Tuesday 19 February 2008 13:22:58 Tom Lane wrote:
> Richard Huxton <dev@archonet.com> writes:
> > Douglas J Hunley wrote:
> >> I spent a whopping seven hours restoring a database late Fri nite for a
> >
> > Oh, and have you tweaked the configuration settings for the restore?
> > Lots of work_mem, turn fsync off, that sort of thing.
>
> maintenance_work_mem, to be more specific. If that's too small it will
> definitely cripple restore speed. I'm not sure fsync would make much
> difference, but checkpoint_segments would. See
> http://www.postgresql.org/docs/8.3/static/populate.html#POPULATE-PG-DUMP
from the postgresql.conf i posted:
~ $ grep maint postgresql.conf
maintenance_work_mem = 256MB # min 1MB
thx for the pointer to the URL. I've made note of the recommendations therein
for next time.
>
> Also: why did you choose -o ... was there a real need to? I can see
> that being pretty expensive.
>
I was under the impression our application made reference to OIDs. I'm now
doubting that heavily <g> and am seeking confirmation.
--
Douglas J Hunley (doug at hunley.homeip.net) - Linux User #174778
http://doug.hunley.homeip.net
I've got trouble with the wife again - she came into the bar looking for me
and I asked her for her number.
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To: pgsql-performance@postgresql.org
Cc: doug@hunley.homeip.net, tgl@sss.pgh.pa.us, dev@archonet.com
Subject: Re: 7 hrs for a pg_restore?
In-Reply-To: <200802191408.23960.doug@hunley.homeip.net>
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