Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p3eGF-0006fY-JY for pgsql-admin@arkaria.postgresql.org; Fri, 09 Dec 2022 14:21:59 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1p3eGE-0006La-23 for pgsql-admin@arkaria.postgresql.org; Fri, 09 Dec 2022 14:21:58 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p3eGD-0006C4-Ng for pgsql-admin@lists.postgresql.org; Fri, 09 Dec 2022 14:21:57 +0000 Received: from mailout.easymail.ca ([64.68.200.34]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p3eG9-0002qS-0u for pgsql-admin@lists.postgresql.org; Fri, 09 Dec 2022 14:21:56 +0000 Received: from localhost (localhost [127.0.0.1]) by mailout.easymail.ca (Postfix) with ESMTP id 25978671D3; Fri, 9 Dec 2022 14:21:51 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at emo09-pco.easydns.vpn Received: from mailout.easymail.ca ([127.0.0.1]) by localhost (emo09-pco.easydns.vpn [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rMHnPvLkzLn8; Fri, 9 Dec 2022 14:21:50 +0000 (UTC) Received: from smtpclient.apple (mobile-166-175-59-240.mycingular.net [166.175.59.240]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mailout.easymail.ca (Postfix) with ESMTPSA id ABC88607A0; Fri, 9 Dec 2022 14:21:50 +0000 (UTC) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.200.110.1.12\)) Subject: Re: How to speed WAL apply in destination From: Scott Ribe In-Reply-To: <203270855.2602687.1670583423055@mail.yahoo.com> Date: Fri, 9 Dec 2022 08:21:39 -0600 Cc: Laurenz Albe , =?utf-8?Q?Bryon_Roch=C3=A9?= , Pgsql-admin Content-Transfer-Encoding: quoted-printable Message-Id: References: <364439211.2445507.1670562179127.ref@mail.yahoo.com> <364439211.2445507.1670562179127@mail.yahoo.com> <1E6A35F6-6866-4FDB-8CE8-38C328FF1865@kain.org> <44581ceb3c9c96f48e131ed3de33389db07317e9.camel@cybertec.at> <203270855.2602687.1670583423055@mail.yahoo.com> To: SASIKUMAR Devaraj X-Mailer: Apple Mail (2.3731.200.110.1.12) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk > On Dec 9, 2022, at 4:57 AM, SASIKUMAR Devaraj = wrote: >=20 > During certain interval there is huge WAL file generation f3om primary = around 300gb/hr which delays sync in secondary by atleast 30 mins. Other = time it is normal=20 - have you checked network throughput between the 2 nodes? - are the 2 nodes similar hardware configurations?