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 1lrP4k-0005cd-G0 for pgsql-admin@arkaria.postgresql.org; Thu, 10 Jun 2021 18:06:42 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1lrP4j-0000TA-5k for pgsql-admin@arkaria.postgresql.org; Thu, 10 Jun 2021 18:06:41 +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 1lrP4i-0000T2-Jb for pgsql-admin@lists.postgresql.org; Thu, 10 Jun 2021 18:06:40 +0000 Received: from resqmta-ch2-08v.sys.comcast.net ([2001:558:fe21:29:69:252:207:40]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lrP4b-0000XS-TZ for pgsql-admin@lists.postgresql.org; Thu, 10 Jun 2021 18:06:39 +0000 Received: from resomta-ch2-09v.sys.comcast.net ([69.252.207.105]) by resqmta-ch2-08v.sys.comcast.net with ESMTP id rNsPlLfnl5RiArP4Zlx4FI; Thu, 10 Jun 2021 18:06:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=20190202a; t=1623348391; bh=9MvfUmF5rtcqh/DR0l4Wy9FpJCX5cBc7HP6897CE+00=; h=Received:Received:From:Content-Type:Mime-Version:Subject: Message-Id:Date:To; b=nKniJRfZ0zax7YlMBAXjUfodJdSM+Brwusp5dYjQ/QoPu5Y1BvC0XLcfKAMjykJPp 8Nz70fSok53lYshhpJ+RqWCaletslCkKGEQ5dZ+vHcFpYDcxWU8ACWWFMDj4bqr16b vJB+1KtHGKK/ROeetfbYj9dep85nmOASlArZ0MPG4bpjQfgevLkw832vKXrB4b4wwT 1BpD5z9ISYQvKJ/hy9BNsM+SEkjE8nm4TS6kGss1VgOqZA6Lw05tDEpc9HwynR7Lil r7leXT6tsi5jl0FzsjEGLCMMvXfnf8zwJC152QhEzF06egX5pB8zrVPB6AnSMvFSZy 62ud0DiwmSdhA== Received: from [IPv6:2601:240:d081:59d0:e53a:fb9e:afeb:3b05] ([IPv6:2601:240:d081:59d0:e53a:fb9e:afeb:3b05]) by resomta-ch2-09v.sys.comcast.net with ESMTPA id rP4NlDwfanqn3rP4Ylz2lh; Thu, 10 Jun 2021 18:06:31 +0000 X-Xfinity-VMeta: sc=0.00;st=legit From: John Wiencek Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: RHEL-8 Kernel Settings Message-Id: Date: Thu, 10 Jun 2021 13:06:19 -0500 To: Pgsql-admin X-Mailer: Apple Mail (2.3654.60.0.2.21) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Hello I=E2=80=99m looking for assistance in determining kernel setting for a = VM RHEL-8 linux server running postgresql-13. I have 3 server groupings 1) 2 vcpu=E2=80=99s 8gb memory 2) 4 cpu=E2=80=99s 16gb memory 3) 8 cpu=E2=80=99s 32gb memory I=E2=80=99ve read various articles and the PostgreSQL documentation . = Does anyone have practical experiences doing this kind of set up Do kernel setting requirements change based on the number of cpu=E2=80=99s= and amount of memory? I=E2=80=99ve not read any mention of this. Regards John W