Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YoCli-0008OJ-At for pgsql-admin@arkaria.postgresql.org; Fri, 01 May 2015 15:22:22 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YoClh-0001Ni-MQ for pgsql-admin@arkaria.postgresql.org; Fri, 01 May 2015 15:22:21 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YoClg-0001Na-TJ for pgsql-admin@postgresql.org; Fri, 01 May 2015 15:22:21 +0000 Received: from mailout.easymail.ca ([64.68.201.169]) by makus.postgresql.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84) (envelope-from ) id 1YoCld-0003L6-LZ for pgsql-admin@postgresql.org; Fri, 01 May 2015 15:22:19 +0000 Received: from localhost (localhost [127.0.0.1]) by mailout.easymail.ca (Postfix) with ESMTP id 78FB6E14B; Fri, 1 May 2015 11:22:15 -0400 (EDT) X-Virus-Scanned: Debian amavisd-new at mailout.easymail.ca X-Spam-Flag: NO X-Spam-Score: -3.91 X-Spam-Level: X-Spam-Status: No, score=-3.91 required=5 tests=[ALL_TRUSTED=-1.8, AWL=-0.203, BAYES_00=-2.599, DNS_FROM_AHBL_RHSBL=0.692] Received: from mailout.easymail.ca ([127.0.0.1]) by localhost (easymail-mailout.easydns.vpn [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NmNzomAr-AIq; Fri, 1 May 2015 11:22:15 -0400 (EDT) Received: from [192.168.2.16] (unknown [8.39.228.5]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mailout.easymail.ca (Postfix) with ESMTPSA id EC2BCE12E; Fri, 1 May 2015 11:22:14 -0400 (EDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Subject: Re: pg_dump and pg_restore with multiple streams does Not seem to improve overall times From: Scott Ribe In-Reply-To: Date: Fri, 1 May 2015 09:22:11 -0600 Cc: pgsql-admin@postgresql.org Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "Susan K. McClure" X-Mailer: Apple Mail (2.2098) X-Pg-Spam-Score: -2.6 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org On May 1, 2015, at 9:16 AM, Susan K. McClure wrote: >=20 > The DB in question is ~25GB. The processor has 24 Cpus, 12 cores=20 >=20=20 > I have tried with "--jobs =3D 8, 12, and 20" with little or no discernib= le improvements.=20 I would immediately suspect that you might be disk-bound instead of CPU-bou= nd. What=E2=80=99s the setup of your storage system? --=20 Scott Ribe scott_ribe@elevated-dev.com http://www.elevated-dev.com/ https://www.linkedin.com/in/scottribe/ (303) 722-0567 voice --=20 Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin