Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Yxzie-0002Tp-2N for pgsql-admin@arkaria.postgresql.org; Thu, 28 May 2015 15:27:40 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1Yxzid-00070V-Ad for pgsql-admin@arkaria.postgresql.org; Thu, 28 May 2015 15:27:39 +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 1Yxzia-0006vB-Nj for pgsql-admin@postgresql.org; Thu, 28 May 2015 15:27:36 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84) (envelope-from ) id 1YxziY-0005Na-61 for pgsql-admin@postgresql.org; Thu, 28 May 2015 15:27:35 +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 t4SFRVFT015002; Thu, 28 May 2015 11:27:31 -0400 From: Tom Lane To: girish R G peetle cc: pgsql-admin Subject: Re: PostgreSQL Dump based backup using pipe In-reply-to: References: <31650.1432736684@sss.pgh.pa.us> <2627.1432745444@sss.pgh.pa.us> Comments: In-reply-to girish R G peetle message dated "Thu, 28 May 2015 14:40:57 +0530" Date: Thu, 28 May 2015 11:27:31 -0400 Message-ID: <15001.1432826851@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-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org girish R G peetle writes: > I just tracked pg_dump writing output to a file. (using procmon) > As indicated below data is not written in serial fashion. > If we use name pipe would this behavior cause problem ? It's less efficient with a named pipe, yes, because then pg_dump can't do that. But this doesn't prove anything one way or another concerning your original complaint. regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin