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 1jPVup-0001ui-3d for pgsql-docs@arkaria.postgresql.org; Fri, 17 Apr 2020 18:40:40 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1jPVun-0003lO-Ut for pgsql-docs@arkaria.postgresql.org; Fri, 17 Apr 2020 18:40:37 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jPVun-0003j8-EX for pgsql-docs@lists.postgresql.org; Fri, 17 Apr 2020 18:40:37 +0000 Received: from lb1-smtp-cloud8.xs4all.net ([194.109.24.21]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jPVul-0004cj-3A for pgsql-docs@lists.postgresql.org; Fri, 17 Apr 2020 18:40:37 +0000 Received: from webmailclassic.xs4all.nl ([IPv6:2001:888:0:22:194:109:20:203]) by smtp-cloud8.xs4all.net with ESMTPA id PVuijD74KlKa1PVuijdOdA; Fri, 17 Apr 2020 20:40:33 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xs4all.nl; s=s1; t=1587148833; bh=8sfIlnxH43bIuOgA9yIi1ZwydnmVeFkjU59aKO8zZ6w=; h=MIME-Version:Content-Type:Date:From:To:Subject:Message-ID:From: Subject; b=r6QS1JhGWzNLnFpPiKzZ5z/mEcEAmRxvgYgHwCQflyqISF2mhQ55wExeqd9ENhxJ1 mZWoite9Qn697l6xTvmYjATJK8ikKn1zAf4KNUzXhlY/kk69Nz/d8HnMUFjuuk1V/j uRCPMX/QhyjSN7hZLIaTAB+0jTkBMcGCspbGqqsYOKz/ZG21TrmcFIIEzznIHukqUq 6p91dBMXRUTcuvBKAbdVfnrhTEOMtwhowhpbmsCbk/y87Xi+yut0F4G5tD3aWbnFS5 Q1VB9cuNvWxtbD7IL1LFi3x6CFtvukrVxGsrg/WqeOWBWIr5UMTwdgYs14q95mFPsw mYPMAcTKzlHhQ== Received: from fc0c:c185:a5f8:6dfd:a400:6e47:313b:867f by webmailclassic.xs4all.nl with HTTP (HTTP/1.1 POST); Fri, 17 Apr 2020 20:40:32 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Fri, 17 Apr 2020 20:40:32 +0200 From: Erik Rijkers To: =?UTF-8?Q?J=C3=BCrgen_Purtz?= Cc: Pg Docs Subject: Re: Additional Chapter for Tutorial In-Reply-To: <13c65997-9502-7671-1a7b-50e5d5093514@purtz.de> References: <13c65997-9502-7671-1a7b-50e5d5093514@purtz.de> Message-ID: <40aca6b45b0da614b94c8ef86d89b70b@xs4all.nl> X-Sender: er@xs4all.nl User-Agent: XS4ALL Webmail X-CMAE-Envelope: MS4wfO09bqCwHXCZJbA+ThsECu1gX/9qc33Y2YGIFPaTqVbzQg94S7aUBV3UYO5cTrdiXcGeA/kriSdIYRbhzIJlSeWPCzLK8hK2fhsv9WhZ1J7CIi1olmtG 9O8SsNPfPdpA8n7O+Dbl9YEZ3sGmuI3Zpm6XqhbXJHPsEAPlpTqzpYLFK2Ld1cixxVqfvI1abQmcYU1qbLhQHZM5PvwUBf5oaSmehIVESTceoOwg9Dg1+1pw PmRLivFrf/S9Tt4kjl5hLQ== List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 2020-04-17 19:56, Jürgen Purtz wrote: > Our documentation explains many details about commands, tools, > parameters in detail and with high accuracy. Nevertheless my > impression is that we neglect the 'big picture': why certain processes > [0001-architecture.patch] Very good stuff, and useful. I think. I mean that but nevertheless here is a lot of comment :) (I didn't fully compile as docs, just read the 'text' from the patch file) Collabortion Collaboration drop 'resulting' He acts in close cooperation with the It acts in close cooperation with the He loads the configuration files, allocates the It loads the configuration files, allocates the process. He checks the authorization, starts a process. it checks the authorization, starts a and instructs the client application to connect to him. All further and instructs the client application to connect to it. All further by him. by it. In an first attempt In a first attempt much huger than memory, it's likely that much larger than memory, it's likely that RAM is performed in units of complete pages while retaining RAM is performed in units of complete pages, retaining Sooner or later it is necessary to overwrite old RAM Sooner or later it becomes necessary to overwrite old RAM transfered transferred (multiple times) who runs which runs He writes it writes This is the primarily duty of the This is primarily the duty of the or possibly: This is the primary duty of the he starts periodically it starts periodically speeds up a possibly occurring recovery. can speed up recovery. writen written collects counter about accesses collects counters about accesses and others. He stores the obtained information in system and more. It stores the obtained information in system sudirectories consists subdirectories consist <-- plural, no -s there are information there is information and contains the ID of the and contains the ID (pid) of the ( IMHO, it is conventional (and therefore easier to read) to have 'e.g.' followed by a comma, and not by a semi-colon, although obviously that's not really wrong either. ) Thanks, Erik Rijkers