To: henk de wit <henk53602@hotmail.com>
cc: pgsql-performance@postgresql.org
Subject: Re: How to get parallel restore in PG 8.4 to work? 
In-reply-to: <COL104-W6288B22DCD85FC12769A2F58A0@phx.gbl> 
References: <COL104-W6288B22DCD85FC12769A2F58A0@phx.gbl>
Comments: In-reply-to henk de wit <henk53602@hotmail.com>
	message dated "Wed, 01 Apr 2009 00:57:34 +0200"
Date: Tue, 31 Mar 2009 19:08:33 -0400
Message-ID: <20300.1238540913@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>

henk de wit <henk53602@hotmail.com> writes:
> For performance reasons (obviously ;)) I'm experimenting with parallel restore in PG 8.4. I grabbed the latest source snapshot (of today, March 30) and compiled this with zlib support. I dumped a DB from PG 8.3.5 (using maximum compression). I got this message however:
> postgres@mymachine:/home/henk/postgresql-8.4/bin$ time
> ./pg_restore -p 5434 -h localhost -U henk -d db_test -j 8 -Fc
> /home/henk/test-databases/dumps/db_test.custom
> pg_restore: [archiver] WARNING: archive is compressed, but this
> installation does not support compression -- no data will be available
> pg_restore: [archiver] cannot restore from compressed archive (compression
> not supported in this installation)

As far as one can tell from here, you built *without* zlib support.
This is unrelated to parallel restore as such.

			regards, tom lane