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 1nbPnV-0002lx-Mf for pgsql-hackers@arkaria.postgresql.org; Mon, 04 Apr 2022 16:43:21 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1nbPnU-0000FH-FM for pgsql-hackers@arkaria.postgresql.org; Mon, 04 Apr 2022 16:43:20 +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 1nbPkR-0003Q1-A8 for pgsql-hackers@lists.postgresql.org; Mon, 04 Apr 2022 16:40:11 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nbPkP-0005kd-3h for pgsql-hackers@postgresql.org; Mon, 04 Apr 2022 16:40:10 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 234Gdxtn1916715; Mon, 4 Apr 2022 12:40:00 -0400 From: Tom Lane To: Thomas Munro cc: Peter Geoghegan , Andres Freund , Masahiko Sawada , Andrew Dunstan , Michael Paquier , Anastasia Lubennikova , pgsql-hackers Subject: Re: A test for replay of regression tests In-reply-to: <1258185.1648876239@sss.pgh.pa.us> References: <20220325041607.3vcnw34wxoucb5zy@alap3.anarazel.de> <1258185.1648876239@sss.pgh.pa.us> Comments: In-reply-to Tom Lane message dated "Sat, 02 Apr 2022 01:10:39 -0400" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1916713.1649090399.1@sss.pgh.pa.us> Date: Mon, 04 Apr 2022 12:39:59 -0400 Message-ID: <1916714.1649090399@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk I wrote: > I think the fundamental instability here is that this TAP test is > setting shared_buffers small enough to allow the syncscan logic > to kick in where it does not in normal testing. Maybe we should > just disable syncscan in this test script? Did that, we'll see how much it helps. regards, tom lane