Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1vErBr-001qS9-JI for pgsql-committers@arkaria.postgresql.org; Fri, 31 Oct 2025 15:37:22 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1vErBq-00FuL8-32 for pgsql-committers@arkaria.postgresql.org; Fri, 31 Oct 2025 15:37:21 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1vErBp-00FuKz-SF for pgsql-committers@lists.postgresql.org; Fri, 31 Oct 2025 15:37:20 +0000 Received: from momjian.us ([72.94.173.45]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vErBn-004l3N-0t for pgsql-committers@lists.postgresql.org; Fri, 31 Oct 2025 15:37:20 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=momjian.us; s=2025010100; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:To:From:Date:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description; bh=5OEjMWf/LalIjln81ryiNFtTp1+26iwo5vvqGKjoQV0=; b=jwkN7 kPF+IZD4IzNqzI0pvPKFLpozl8JorfcKa4AQ/AlORWHvlX0T4zoE0AnyTulnkeT0wIc0CXCz5b8aV sG4xkXO2WbwZGue3K8WMNB1pv+h1bNdPWOX7DFY99KHJkW66DGUObcu6mm4wPldBw3kTY7H/4xfIy dB6TyF0aD8IVIH97tnSUK39sUcLdYga0HYnCvGeN/URLv1OelqnFWPSiHl8tYqcNY6K1xLTEbrMML d5rKSiu2PUwYpgvOSzyt0uDu1gkIp3KJUaeD8pp/102SOFEbH4zwx6Ac4iU+t26RBo+lIhOmyeSi+ WbqcoByiwTGHivTor/dFGyWASs14w==; Received: from bruce by momjian.us with local (Exim 4.98.2) (envelope-from ) id 1vErBm-00000005YG7-3KkT for pgsql-committers@lists.postgresql.org; Fri, 31 Oct 2025 11:37:18 -0400 Date: Fri, 31 Oct 2025 11:37:18 -0400 From: Bruce Momjian To: pgsql-committers@lists.postgresql.org Subject: Re: pgsql: doc: rewrite random_page_cost description Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Thu, Oct 30, 2025 at 11:12:20PM +0000, Bruce Momjian wrote: > doc: rewrite random_page_cost description > > This removes some of the specifics of how the default was set, and adds > a mention of latency as a reason the value is lower than the storage > hardware might suggest. It still mentions caching. > > Discussion: https://postgr.es/m/CAKAnmmK_nSPYr53LobUwQD59a-8U9GEC3XGJ43oaTYJq5nAOkw@mail.gmail.com > > Backpatch-through: 13 > > Branch > ------ > master > > Details > ------- > https://git.postgresql.org/pg/commitdiff/3896e861b348f282813f165f60fb8ab3342114c6 > > Modified Files > -------------- > doc/src/sgml/config.sgml | 36 ++++++++++++++++++------------------ > 1 file changed, 18 insertions(+), 18 deletions(-) My apologies that I used the incorrect "Discussion" URL above. It should have been: https://postgr.es/m/80d8b470-50fe-40df-b692-3292dd015595@vondra.me I had two random_page_cost threads in my mailbox and unfortunately used the older one. -- Bruce Momjian https://momjian.us EDB https://enterprisedb.com Do not let urgent matters crowd out time for investment in the future.