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 4.96) (envelope-from ) id 1wibyI-000JSN-0R for pgsql-docs@arkaria.postgresql.org; Sat, 11 Jul 2026 17:58:38 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1wibyG-004eLG-1d for pgsql-docs@arkaria.postgresql.org; Sat, 11 Jul 2026 17:58:37 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wi9I3-00HT3x-1R for pgsql-docs@lists.postgresql.org; Fri, 10 Jul 2026 11:21:08 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1wi9I0-00000000dt2-1zYP for pgsql-docs@lists.postgresql.org; Fri, 10 Jul 2026 11:21:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=postgresql.org; s=20171124; h=Message-ID:Date:Reply-To:Cc:From:To:Subject: Content-Transfer-Encoding:MIME-Version:Content-Type:Sender:Content-ID: Content-Description:In-Reply-To:References; bh=oBN0bp8c1rrQT7oFfWYLaFU1qaxfmg73nIleXF3VJ1U=; b=gpIQTOl3bDPnOnBcipu7i2GQs9 7lTQyYnKcAuKxfW52N0v22zCYnhSaQqOpl78rXihuiqkoq7qD2dq+VS+fLm8j1hNq40j+RjAI8tPs QIXqLzaectLKt04h6ZALCJ3p+2c5sh3uLp0/ChJlO07Uqx4ogIsteCCFlcSY5WY8eQhspGdKkSHf2 fVlg0Ov/xYE/gAnTZDSSi17OKyBcpJOyQqhpqVsf0FHw9ubOTfH5HTEdv23ChWy246YkluytNqWwG 7fl7mzWqjaQ1Ce0p0yFgGRqrhZPDn/u8mejJUpYbzdnZnC6R93KqTaXM7C6WQJ0tpVsSzoSJpKVUu E6EvUANA==; Received: from wrigleys.postgresql.org ([2a02:16a8:dc51::60]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wi9Hz-00053I-2b for pgsql-docs@lists.postgresql.org; Fri, 10 Jul 2026 11:21:03 +0000 Received: from localhost ([127.0.0.1] helo=wrigleys.postgresql.org) by wrigleys.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1wi9Hx-003kAm-1G for pgsql-docs@lists.postgresql.org; Fri, 10 Jul 2026 11:21:02 +0000 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: 18.4. Managing Kernel Resources To: pgsql-docs@lists.postgresql.org From: PG Doc comments form Cc: y.saburov@gmail.com Reply-To: y.saburov@gmail.com, pgsql-docs@lists.postgresql.org Date: Fri, 10 Jul 2026 11:20:06 +0000 Message-ID: <178368240694.880999.12059698684907828656@wrigleys.postgresql.org> X-Auto-Response-Suppress: All Auto-Submitted: auto-generated List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/18/kernel-resources.html Description: 18.4. Kernel Resource Management In this section: 1) Table 18.1. System V IPC Parameters > SEMMAP > =E2=80=9Csee text=E2=80=9D -- what does this mean? 2) in the Linux section: block $ sysctl -w kernel.shmmax=3D17179869184 $ sysctl -w kernel.shmall=3D4194304 $ replace with # > To make these settings persist over reboots, see /etc/sysctl.conf. replace =E2=80=9Csee=E2=80=9D with =E2=80=9Cmodify=E2=80=9D 3) Global changes in the section: you continue to use the server process name as =E2=80=9Cpostmaster=E2=80=9D= !!! way too many times (find and replace it)