Received: from malur.postgresql.org ([2a02:16a8:dc51::56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1frerd-0004vs-ER for pgsql-admin@arkaria.postgresql.org; Mon, 20 Aug 2018 07:44:37 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1frerb-0000CD-Gp for pgsql-admin@arkaria.postgresql.org; Mon, 20 Aug 2018 07:44:35 +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 4.89) (envelope-from ) id 1frerb-0000C4-54 for pgsql-admin@lists.postgresql.org; Mon, 20 Aug 2018 07:44:35 +0000 Received: from hermes.gatewaynet.com ([193.92.121.98]) by makus.postgresql.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1frerW-0001sS-Ly for pgsql-admin@lists.postgresql.org; Mon, 20 Aug 2018 07:44:33 +0000 Received: from smadev.internal.net (pc131.internal.net [10.9.200.131]) by hermes.gatewaynet.com (8.14.3/8.14.3/Debian-9.4) with ESMTP id w7K7iM23007868 for ; Mon, 20 Aug 2018 10:44:27 +0300 Received: from smadev.internal.net (smadev [10.9.200.131]) by smadev.internal.net (8.15.2/8.15.2) with ESMTP id w7K7iMQW053290 for ; Mon, 20 Aug 2018 10:44:22 +0300 (EEST) (envelope-from achill@matrix.gatewaynet.com) Subject: Re: logical Replication To: pgsql-admin@lists.postgresql.org References: <1534224580242-0.post@n3.nabble.com> <1534746282900-0.post@n3.nabble.com> <1534747341264-0.post@n3.nabble.com> <1534748661624-0.post@n3.nabble.com> <17b9b7a5-5377-b904-0e8a-e72e72efe1ef@matrix.gatewaynet.com> <1534750828102-0.post@n3.nabble.com> From: Achilleas Mantzios Message-ID: <11f06cb4-8e48-7090-76e0-438b54c70660@matrix.gatewaynet.com> Date: Mon, 20 Aug 2018 10:44:22 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <1534750828102-0.post@n3.nabble.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Virus-Scanned: clamav-milter 0.98.7 at hermes X-Virus-Status: Clean X-Spam-Status: No, score=-28.0 required=5.0 tests=ALL_TRUSTED,DYN_HAM_COORD, DYN_HAM_IT,DYN_HAM_NAUTICAL,DYN_SPAM_MED6 autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on hermes.gatewaynet.com List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 20/08/2018 10:40, pavan95 wrote: > Hi Achilleas, > >> Now on the publisher side what does : >> select * from pg_stat_replication ; >> tell you? > Please find the below output: >> *select * from pg_stat_replication ;* > pid | usesysid | usename | application_name | client_addr | > client_hostname | client_port | backend_start | > backend_xmin | state | sent_lsn | write_lsn | flush_lsn | replay_lsn > | write_lag | flush_lag | replay_lag | sync_priority | sync_state > -------+----------+----------+------------------+--------------+-----------------+-------------+----------------------------------+--------------+-----------+------------+------------+------------+------------+-----------+-----------+------------+---------------+------------ > 32515 | 78225 | user | appn | xxx.xxx.xx.xxx | > | 411111 | 2018-08-20 11:32:09.636622+05:30 | | streaming > | 0/69BE27D0 | 0/69BE27D0 | 0/69BE27D0 | 0/69BE27D0 | | > | | 0 | async > So here you have zero lag. How do you experience the lag? What do you exactly measure? > > > > > -- > Sent from: http://www.postgresql-archive.org/PostgreSQL-admin-f2076596.html > -- Achilleas Mantzios IT DEV Lead IT DEPT Dynacom Tankers Mgmt