Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YX7ia-0002K2-9k for pgsql-performance@arkaria.postgresql.org; Sun, 15 Mar 2015 12:32:32 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YX7iZ-0007cU-PX for pgsql-performance@arkaria.postgresql.org; Sun, 15 Mar 2015 12:32:31 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YX7iY-0007cO-Uz for pgsql-performance@postgresql.org; Sun, 15 Mar 2015 12:32:31 +0000 Received: from mail.anarazel.de ([217.115.131.40]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YX7iV-00050J-Jc for pgsql-performance@postgresql.org; Sun, 15 Mar 2015 12:32:29 +0000 Received: from intern.anarazel.de (p5DDC543A.dip0.t-ipconnect.de [93.220.84.58]) (Authenticated sender: andres@anarazel.de) by mail.anarazel.de (Postfix) with ESMTPSA id 87115860002; Sun, 15 Mar 2015 13:32:21 +0100 (CET) Date: Sun, 15 Mar 2015 13:32:19 +0100 From: Andres Freund To: Robert Kaye Cc: Andreas Kretschmer , pgsql-performance@postgresql.org Subject: Re: MusicBrainz postgres performance issues Message-ID: <20150315123219.GA19792@alap3.anarazel.de> References: <20150315114123.GA7529@tux> <0D72E149-EE2F-4E5F-9FAE-6FA902960A29@musicbrainz.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <0D72E149-EE2F-4E5F-9FAE-6FA902960A29@musicbrainz.org> X-Pg-Spam-Score: -4.2 (----) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 2015-03-15 13:08:13 +0100, Robert Kaye wrote: > > On Mar 15, 2015, at 12:41 PM, Andreas Kretschmer wrote: > > > > just a wild guess: raid-controller BBU faulty > > We don’t have a BBU in this server, but at least we have redundant power supplies. > > In any case, how would a fault batter possibly cause this? Many controllers disable write-back caching when the battery is dead. Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance