Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gKP8A-0005Af-Rb for pgsql-admin@arkaria.postgresql.org; Wed, 07 Nov 2018 14:48:30 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1gKP88-0006QO-Ch for pgsql-admin@arkaria.postgresql.org; Wed, 07 Nov 2018 14:48:28 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gKP88-0006Pj-5J for pgsql-admin@lists.postgresql.org; Wed, 07 Nov 2018 14:48:28 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gKP86-0008VB-53 for pgsql-admin@lists.postgresql.org; Wed, 07 Nov 2018 14:48:27 +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 wA7EmOXa027418; Wed, 7 Nov 2018 09:48:24 -0500 From: Tom Lane To: Achilleas Mantzios cc: pgsql-admin@lists.postgresql.org Subject: Re: PostgreSQL 10.5 : Strange pg_wal fill-up, solved with the shutdown checkpoint In-reply-to: <93155f7d-21e3-7442-5d76-acdaf57f0dae@matrix.gatewaynet.com> References: <0d25bb8c-9cc7-10bc-71ba-6a8a8c33ec49@matrix.gatewaynet.com> <46D70340-2172-406A-A346-B2D4C6E947E4@crazybean.net> <6031b670-52d1-b823-6b41-35d2fa1873c6@matrix.gatewaynet.com> <23169.1541516303@sss.pgh.pa.us> <93155f7d-21e3-7442-5d76-acdaf57f0dae@matrix.gatewaynet.com> Comments: In-reply-to Achilleas Mantzios message dated "Wed, 07 Nov 2018 12:33:56 +0200" MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-ID: <27416.1541602104.1@sss.pgh.pa.us> Content-Transfer-Encoding: quoted-printable Date: Wed, 07 Nov 2018 09:48:24 -0500 Message-ID: <27417.1541602104@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Achilleas Mantzios writes: > On 6/11/18 4:58 =CE=BC.=CE=BC., Tom Lane wrote: >> I have no idea how that could happen exactly. If it happens again, >> it'd be really interesting to attach to the checkpointer with a >> debugger and collect a stack trace. > Thank you Tom. Should I also re-run configure --enable-debug && make cle= an install ? Initially PostgreSQL was built without --enable-debug, so cur= rently it does not show source code line numbers in = > gdb bt . Yeah, if you do not have debug symbols installed, the stack trace will be of very little use. regards, tom lane