Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1czAps-0000jR-Ua for pgsql-performance@arkaria.postgresql.org; Fri, 14 Apr 2017 23:41:05 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1czAps-0003VH-HZ for pgsql-performance@arkaria.postgresql.org; Fri, 14 Apr 2017 23:41:04 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1czAps-0003Ut-4j for pgsql-performance@postgresql.org; Fri, 14 Apr 2017 23:41:04 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1czApp-00033g-Lb for pgsql-performance@postgresql.org; Fri, 14 Apr 2017 23:41:03 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id v3ENewZ9020572; Fri, 14 Apr 2017 19:40:58 -0400 From: Tom Lane To: Hans Braxmeier cc: "pgsql-performance@postgresql.org" Subject: Re: Postgres 9.5 / 9.6: Restoring PG 9.4 dump is very very slow In-reply-to: References: Comments: In-reply-to Hans Braxmeier message dated "Fri, 14 Apr 2017 23:30:10 -0000" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <20570.1492213258.1@sss.pgh.pa.us> Content-Transfer-Encoding: quoted-printable Date: Fri, 14 Apr 2017 19:40:58 -0400 Message-ID: <20571.1492213258@sss.pgh.pa.us> X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org Hans Braxmeier writes: > Restoring these dumps in PG 9.4 takes less than 20 minutes, restoring the= m in PG 9.5/9.5 takes several hours on the same system (even if I make a PG= 9.5/9.6 dumps and try to restore this one)! Can you provide a test case demonstrating this sort of slowdown? regards, tom lane --=20 Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance