X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 807229FA425 for ; Wed, 10 May 2006 06:55:31 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 70966-10 for ; Wed, 10 May 2006 06:55:21 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from h57078.serverkompetenz.net (talk-net.net [81.169.128.8]) by postgresql.org (Postfix) with ESMTP id C20359F931D for ; Wed, 10 May 2006 06:55:21 -0300 (ADT) Received: from [192.168.115.250] (e178141156.adsl.alicedsl.de [85.178.141.156]) by h57078.serverkompetenz.net (Postfix) with ESMTP id 5BDCA50C727; Wed, 10 May 2006 11:53:44 +0200 (CEST) Message-ID: <4461B899.4030502@network-inventory.de> Date: Wed, 10 May 2006 11:55:37 +0200 From: Thomas Vatter User-Agent: Mozilla Thunderbird 1.0.5 (Windows/20050711) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Tino Wildenhain CC: pgsql-performance@postgresql.org Subject: Re: in memory views References: <4461AFFF.7060200@network-inventory.de> <4461B3DE.6030700@wildenhain.de> In-Reply-To: <4461B3DE.6030700@wildenhain.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200605/233 X-Sequence-Number: 19020 Tino Wildenhain wrote: > Thomas Vatter schrieb: > >> is there a possibility for creating views or temp tables in memory to >> avoid disk io when user makes select operations? > > > No need. The data will be available in OS and database caches if > they are really required often. If not, tune up the caches and > do a regular "pre select". > > Regards > Tino > > hmm, I am selecting a resultset with 1300 rows joined from 12 tables. with jdbc I am waiting 40 seconds until the first row appears. The following rows appear really fast but the 40 seconds are a problem. regards tom