Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id B468D1337B71 for ; Fri, 5 Nov 2010 09:08:34 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 55055-01 for ; Fri, 5 Nov 2010 12:08:27 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.mnc.ch (62-2-77-205.static.cablecom.ch [62.2.77.205]) by mail.postgresql.org (Postfix) with ESMTP id 581C41337B74 for ; Fri, 5 Nov 2010 09:08:27 -0300 (ADT) Received: from localhost (mail2.mnc.ch [127.0.0.1]) by mail.mnc.ch (Postfix) with ESMTP id 9835A23048; Fri, 5 Nov 2010 12:08:27 +0000 (GMT) X-Virus-Scanned: amavisd-new at mnc.ch Received: from mail.mnc.ch ([127.0.0.1]) by localhost (mail2.mnc.ch [127.0.0.1]) (amavisd-new, port 10025) with LMTP id lM2qkvoS53a8; Fri, 5 Nov 2010 12:08:27 +0000 (GMT) Received: from meuh.localdomain (62-2-77-204.static.cablecom.ch [62.2.77.204]) by mail.mnc.ch (Postfix) with ESMTP id 2ADCB23047; Fri, 5 Nov 2010 12:08:27 +0000 (GMT) Received: by meuh.localdomain (Postfix, from userid 1000) id EE35B110275; Fri, 5 Nov 2010 13:08:26 +0100 (CET) To: Marti Raudsepp Cc: A B , Szymon Guz , pgsql-performance@postgresql.org Subject: Re: Running PostgreSQL as fast as possible no matter the consequences References: From: Guillaume Cottenceau X-Hashcash: 1:21:101105:marti@juffo.org::Y2jEMgWJt91m5yyb:00O7YB X-Hashcash: 1:21:101105:gentosaker@gmail.com::EEs8aLefrVCQ7SZ9:00000000000000000000000000000000000000000Acpk X-Hashcash: 1:21:101105:mabewlun@gmail.com::r/RHoe5RnDSUul7H:0000000000000000000000000000000000000000000G19x X-Hashcash: 1:21:101105:pgsql-performance@postgresql.org::skzaqL2iEIsQfHne:00000000000000000000000000000EBNW Date: Fri, 05 Nov 2010 13:08:26 +0100 In-Reply-To: (Marti Raudsepp's message of "Fri\, 5 Nov 2010 13\:36\:34 +0200") Message-ID: <87hbfwvupx.fsf@meuh.mnc.lan> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.9 tagged_above=-10 required=5 tests=BAYES_00=-1.9 X-Spam-Level: X-Archive-Number: 201011/56 X-Sequence-Number: 41080 Marti Raudsepp writes: > On Fri, Nov 5, 2010 at 13:32, A B wrote: >> I was just thinking about the case where I will have almost 100% >> selects, but still needs something better than a plain key-value >> storage so I can do some sql queries. >> The server will just boot, load data, run,  hopefully not crash but if >> it would, just start over with load and run. > > If you want fast read queries then changing > fsync/full_page_writes/synchronous_commit won't help you. That illustrates how knowing the reasoning of this particular requests makes new suggestions worthwhile, while previous ones are now seen as useless. -- Guillaume Cottenceau