Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bjm0c-0005S3-9a for pgsql-admin@arkaria.postgresql.org; Tue, 13 Sep 2016 11:36:14 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1bjm0b-0005MU-Nz for pgsql-admin@arkaria.postgresql.org; Tue, 13 Sep 2016 11:36:13 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1bjm0b-0005MN-4E for pgsql-admin@postgresql.org; Tue, 13 Sep 2016 11:36:13 +0000 Received: from andy.depesz.com ([88.198.47.100] helo=depesz.com) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84_2) (envelope-from ) id 1bjm0Y-0000aS-3v for pgsql-admin@postgresql.org; Tue, 13 Sep 2016 11:36:11 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=depesz.com; s=20140207; h=In-Reply-To:Content-Type:MIME-Version:References:Reply-To: Message-ID:Subject:Cc:To:Sender:From:Date:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Vzr6X7Il5cJH4Hp6n3YhKawIrLQ1ykrn9IJu4QVCF+E=; b=DYdpTeTU86TN6l9tgg3TVOfKih YSkpVcVIkmLT8V8rWB/tGomA3UvqIjtPlZpe7wbL1BXVlSx16G4YWY0Et/K4cfy5Tfi5YEB9kS4+k uxmZRK5tLVpjHmH+7Aj63W4tf; Received: from andy.depesz.com ([88.198.47.100] helo=depesz.com) by depesz.com with esmtpa (Exim 4.87) (envelope-from ) id 1bjm0U-0007Vp-1x; Tue, 13 Sep 2016 13:36:06 +0200 Date: Tue, 13 Sep 2016 13:36:05 +0200 From: hubert depesz lubaczewski To: Poul Kristensen Cc: pgsql-admin@postgresql.org Subject: Re: The sizing of HW resources of a physical PG server Message-ID: <20160913113605.vmxptflt6m4xicn2@depesz.com> Reply-To: depesz@depesz.com References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/ (1.7.0) X-Pg-Spam-Score: -4.3 (----) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org On Tue, Sep 13, 2016 at 01:25:21PM +0200, Poul Kristensen wrote: > Hi ! > > How to size a physical PG server? > > What does a physical PG server like concerning HW resources? > number of cpu's(cache L1 expensive I think, L2 and L3), RAM? you have to know/understand how large your database, and its active set will be, and how many queries you need to run concurrently/per-second. once you have this information - you can establish some minimums. Best regards, depesz -- The best thing about modern society is how easy it is to avoid contact with it. http://depesz.com/ -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin