Re: 7 hrs for a pg_restore? - Mailing list pgsql-performance

From Tom Lane
Subject Re: 7 hrs for a pg_restore?
Date
Msg-id 19241.1203445378@sss.pgh.pa.us
Whole thread Raw
In response to Re: 7 hrs for a pg_restore?  (Richard Huxton <dev@archonet.com>)
Responses Re: 7 hrs for a pg_restore?
Re: 7 hrs for a pg_restore?
List pgsql-performance
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

Also: why did you choose -o ... was there a real need to?  I can see
that being pretty expensive.

            regards, tom lane

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