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 1u7SY9-00Gpad-8l for pgsql-general@arkaria.postgresql.org; Wed, 23 Apr 2025 05:21:33 +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 1u7SY6-00390F-UC for pgsql-general@arkaria.postgresql.org; Wed, 23 Apr 2025 05:21:31 +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 1u7SY6-003906-J5 for pgsql-general@lists.postgresql.org; Wed, 23 Apr 2025 05:21:31 +0000 Received: from mail-yw1-x112b.google.com ([2607:f8b0:4864:20::112b]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from ) id 1u7SY5-001TXX-1L for pgsql-general@lists.postgresql.org; Wed, 23 Apr 2025 05:21:30 +0000 Received: by mail-yw1-x112b.google.com with SMTP id 00721157ae682-7080dd5fe92so15006937b3.3 for ; Tue, 22 Apr 2025 22:21:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1745385688; x=1745990488; darn=lists.postgresql.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=6lIvq0bWi64ciSXl9unYidYb8OBYuBqzaitK/bQzILA=; b=DeQid+1GnVCewdDwwQFKte85a3ZdllT3uwjcHry98iX4N9TlJaGlwcIPWyZSGefet8 nhJi9hDJ/lQcPaUpVj/+bH6V+na6gqs/mTrAtyZE0oY8tnFHIdNdk6WNrZUs/AoVGDrL acKM6vGSsAvOP3Wme9HK2QxOV6o1y4S8oabhxmp2mpJ0i9yyxEqlUhfH2oqKyfqp8M9n Nqwe933qKrHkvoxkBVD5rCWR/dbmJ+MiCl3aRs5ytUjaZnX/Vb4K9QhLTawTuxXQ2DyE 1qAplDJ/o8EuDnFBkeyY3FE+oLmvRJ5Zfn3eS/lBlQLnoEMcUr4uMdGsO15Z4KH9WgGV bl8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745385688; x=1745990488; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=6lIvq0bWi64ciSXl9unYidYb8OBYuBqzaitK/bQzILA=; b=FBjrEcNnjG1oxTeh9hhJMlsY+05+D2TCeB2zHu5D4RNSaYiE6oeEce87rBvKfEd5pU aG9Ot7xp8H4EGrWG4RS8JqoaTiz5rsBHCzNcR3AeRnOhx0W/nB98S5zseD50rSgmMp60 miqWDbTSiHTgMXHXZ3jYZv5YdsDZA/S94PubLPCcs62tOehpA2AWG8KePrUEVjYjIj55 qx26SFH+HK7Dx/6WwCH2zDBNMGAFV8xDb29ZygxjhUN6fSUn7R9RbK5PoxC2gMIUNS9+ VYdJTWdon0ESkZCdyuJLo8YbA6eKOgBtFEupWJh3POdTbtmBXFkOb1r2W3CAJ7qpNhbv Usqg== X-Gm-Message-State: AOJu0YwCNIYMOO5dr7Ks4s9h4LToYO2aAR/GjsajA7SuYs80/DLB6+8+ 6/ZcHg8lmWgNqa7Xo2HG5cvpWumt28vAIE/yUd4JXtKrLDTS/YgnKjiUWI9UInftr9o17E3KFLp 5d51dsQWUjG2UHVP2eZCHmNC604oQimptcQA= X-Gm-Gg: ASbGncsH7HUliyby2WcIZXp0tcyw5AFLD8PS6JeXG1QV544pvZq0HyDB3s1Sve0F3fx 1w65cafaFALcwbDNqvGimgQbwbBK6xS7dShqofZfvku7AZ2qT/xEq4KCBrM4eQ8PrqQ1VdlOVj+ kv4HS1afCLAGUhfTA87tiA+nYXlB0qkAq1kEvdC2O17YIWPx7AOmeGkp4= X-Google-Smtp-Source: AGHT+IF6oYhvOxlb1aYq4P3KR7sBkQ4gO/+eFBoyDEYWUcrVJa97PIjVK/pivs6x+T1Aj69Mo+g/dPVWKRfvLA4WsR0= X-Received: by 2002:a05:690c:6c91:b0:6f9:a062:2a06 with SMTP id 00721157ae682-706cccbe366mr264500247b3.8.1745385688010; Tue, 22 Apr 2025 22:21:28 -0700 (PDT) MIME-Version: 1.0 From: Igor Korot Date: Wed, 23 Apr 2025 00:21:17 -0500 X-Gm-Features: ATxdqUFF9wmHt2dEsH32EwZL9A0wGnesljhZJrdbMemid9VQDjqwTczSxiHvNQc Message-ID: Subject: Another documentation issue To: "pgsql-generallists.postgresql.org" Content-Type: text/plain; charset="UTF-8" List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Hi, ALL, On the page https://www.postgresql.org/docs/current/runtime-config-query.html#GUC-SEQ-PAGE-COST it is only given the default value of this parameter. No min/max values are provided.. The same can be sad about https://www.postgresql.org/docs/current/runtime-config-query.html#GUC-RANDOM-PAGE-COST However, this page https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-EFFECTIVE-IO-CONCURRENCY describes both default and mn/max, however t s says: [quote] The default is 1 on supported systems, otherwise 0 [/quote]] No explanation of what is "supported system" is given... And the same can be said about https://www.postgresql.org/docs/current/runtime-config-resource.html#GUC-MAINTENANCE-IO-CONCURRENCY. Thank you