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 1oP52X-00076J-H4 for pgsql-docs@arkaria.postgresql.org; Fri, 19 Aug 2022 16:40:09 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1oP52W-0006h6-2c for pgsql-docs@arkaria.postgresql.org; Fri, 19 Aug 2022 16:40:08 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oP52V-0006gx-R4 for pgsql-docs@lists.postgresql.org; Fri, 19 Aug 2022 16:40:07 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oP52P-0006VJ-B6 for pgsql-docs@lists.postgresql.org; Fri, 19 Aug 2022 16:40:07 +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 27JGdtMZ3203691; Fri, 19 Aug 2022 12:39:55 -0400 From: Tom Lane To: Alvaro Herrera cc: Bruce Momjian , shangzi.x@columbia.edu, pgsql-docs@lists.postgresql.org Subject: Re: relpages in pg_class In-reply-to: <20220819160133.l2m47puqpjzk3mrh@alvherre.pgsql> References: <20220819160133.l2m47puqpjzk3mrh@alvherre.pgsql> Comments: In-reply-to Alvaro Herrera message dated "Fri, 19 Aug 2022 18:01:33 +0200" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <3203689.1660927195.1@sss.pgh.pa.us> Date: Fri, 19 Aug 2022 12:39:55 -0400 Message-ID: <3203690.1660927195@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Alvaro Herrera writes: > On 2022-Aug-19, Bruce Momjian wrote: >> Well, blocks and pages are the same size, so I don't see the problem. > If you think about operating system "blocks" rather than Postgres > "blocks", I can see how this can be interpreted differently. I'm not > sure if this is a good place to make that distinction, though; I mean, > if we do, how many other places should we patch similarly? Yeah, we use "blocks" and "pages" interchangeably, which is something I don't feel a need to change; but evidently the OP didn't realize that. This is a job for the glossary, perhaps? regards, tom lane