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 1jT6a9-0006vW-Ep for pgsql-hackers@arkaria.postgresql.org; Mon, 27 Apr 2020 16:26:09 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1jT6a8-0005en-AC for pgsql-hackers@arkaria.postgresql.org; Mon, 27 Apr 2020 16:26:08 +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 1jT6a8-0005eQ-3Z for pgsql-hackers@lists.postgresql.org; Mon, 27 Apr 2020 16:26:08 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jT6a5-0002rc-83 for pgsql-hackers@lists.postgresql.org; Mon, 27 Apr 2020 16:26:07 +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 03RGQ3M9021178; Mon, 27 Apr 2020 12:26:03 -0400 From: Tom Lane To: Justin Pryzby cc: Konstantin Knizhnik , Richard Guo , Thomas Munro , Alvaro Herrera , pgsql-hackers@lists.postgresql.org Subject: Re: weird hash plan cost, starting with pg10 In-reply-to: <20200427161823.GY28974@telsasoft.com> References: <20200323165059.GA24950@alvherre.pgsql> <18131.1584982859@sss.pgh.pa.us> <4751e4df-5f98-657e-fb88-c039dd1e7a31@postgrespro.ru> <31321.1586549487@sss.pgh.pa.us> <20200427161823.GY28974@telsasoft.com> Comments: In-reply-to Justin Pryzby message dated "Mon, 27 Apr 2020 11:18:23 -0500" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <21176.1588004763.1@sss.pgh.pa.us> Date: Mon, 27 Apr 2020 12:26:03 -0400 Message-ID: <21177.1588004763@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Justin Pryzby writes: > Checking if you're planning to backpatch this ? Are you speaking of 5c27bce7f et al? regards, tom lane