X-Original-To: pgsql-hackers-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 7D4753A3C4E for ; Fri, 5 Nov 2004 12:54:00 +0000 (GMT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 91848-02 for ; Fri, 5 Nov 2004 12:53:56 +0000 (GMT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by svr1.postgresql.org (Postfix) with ESMTP id 455A33A3C01 for ; Fri, 5 Nov 2004 12:53:58 +0000 (GMT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by news.hub.org (8.12.9/8.12.9) with ESMTP id iA5CrtJ9092419 for ; Fri, 5 Nov 2004 12:53:55 GMT (envelope-from news@news.hub.org) Received: (from news@localhost) by news.hub.org (8.12.9/8.12.9/Submit) id iA5CmKbN090243 for pgsql-hackers@postgresql.org; Fri, 5 Nov 2004 12:48:20 GMT From: Gaetano Mendola X-Newsgroups: comp.databases.postgresql.hackers Subject: Re: [pgsql-www] pg_autovacuum is nice ... but ... Date: Fri, 05 Nov 2004 13:48:22 +0100 Organization: PYRENET Midi-pyrenees Provider Lines: 24 Message-ID: <418B7696.3050302@bigfoot.com> References: <20041103155855.O82047@ganymede.hub.org> <41895BDA.1090903@postgresql.org> <20041103201625.S82047@ganymede.hub.org> <19430.1099533223@sss.pgh.pa.us> <418AA915.7010903@postgresql.org> <20041104182322.D21566@ganymede.hub.org> <6789.1099608272@sss.pgh.pa.us> <418B6B78.7040107@bigfoot.com> <418B7302.8080803@samurai.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@pyrenet.fr To: Neil Conway User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: en-us, en In-Reply-To: <418B7302.8080803@samurai.com> X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime To: pgsql-hackers@postgresql.org X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.0 tagged_above=0.0 required=5.0 tests= X-Spam-Level: X-Archive-Number: 200411/164 X-Sequence-Number: 60736 Neil Conway wrote: > Gaetano Mendola wrote: > >> Right but we can create a new segment and use it too. I don't know how >> these segments are used but I used to do it in the past, of course you >> have >> to create a memory manager that handle not ccntinuous segments. > > > The TelegraphCQ folks have already done this: > > http://archives.postgresql.org/pgsql-hackers/2003-05/msg00336.php > > I haven't had a chance to look at the patch, though. Not bad, however that post is more than one year old. Implement a resizable shared memory could really improve postgres performances ? Regards Gaetano Mendola