Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dFFvA-0004oT-DQ for pgsql-admin@arkaria.postgresql.org; Mon, 29 May 2017 08:21:00 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1dFFvA-00034r-08 for pgsql-admin@arkaria.postgresql.org; Mon, 29 May 2017 08:21:00 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dFFtJ-0006HB-4b for pgsql-admin@postgresql.org; Mon, 29 May 2017 08:19:05 +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_2) (envelope-from ) id 1dFFtG-0002D0-Ne for pgsql-admin@postgresql.org; Mon, 29 May 2017 08:19:03 +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 v4T8J1tP031837; Mon, 29 May 2017 04:19:01 -0400 From: Tom Lane To: "Klaus P. Pieper" cc: pgsql-admin@postgresql.org Subject: Re: pgbench Windows outperforms Debian in Write tests while Debian is faster in SELECT only tests In-reply-to: <028501d2d84f$2f1ea840$8d5bf8c0$@gmail.com> References: <028501d2d84f$2f1ea840$8d5bf8c0$@gmail.com> Comments: In-reply-to "Klaus P. Pieper" message dated "Mon, 29 May 2017 09:42:53 +0200" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <31835.1496045941.1@sss.pgh.pa.us> Date: Mon, 29 May 2017 04:19:01 -0400 Message-ID: <31836.1496045941@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 "Klaus P. Pieper" writes: > How can Windows outperform Debian by a factor of 2? Are you sure you have Windows configured to fsync properly? Not waiting for writes to hit disk would be a really easy explanation for a discrepancy of this kind. 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