Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 6FE732E3415 for ; Mon, 17 Mar 2008 18:44:22 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 41949-01-5 for ; Mon, 17 Mar 2008 18:44:16 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.5 Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.186]) by postgresql.org (Postfix) with ESMTP id 822B02E3590 for ; Mon, 17 Mar 2008 17:58:38 -0300 (ADT) Received: by nf-out-0910.google.com with SMTP id f5so1952158nfh.23 for ; Mon, 17 Mar 2008 13:58:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; bh=bGW4hfaVtdNk06CAnuIjNu4idw/vR0DaQwfWytT8e/Q=; b=R3XS5+TZfXI2r2MS7RSC9B0HG0b6ty2bte3JKigzn3wlo0PS25GCjA19rQcbNZRtGDdhrgRZXigz5K3gKUZCcd5TDTnq2jkDoPzU8c2Hw2iHvV83vX1rg6VHoDlI1Y0H87jNK9edNoP+OAFiwwwQ5ejrhWhNFGAt9zDf6b7RqSE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=cc:message-id:from:to:in-reply-to:content-type:content-transfer-encoding:mime-version:subject:date:references:x-mailer; b=xJXs8N7uCluG5tnNQqqk0qjWFWQ5ju/ukqBq2Q2AdNtvMrIxI4k3hz6FDKsOkaHOD/BJLiQ2scG8ATNx8UaMbvPZpnVCWVe0J//s3ILk+ix/UAGYQK+cV3lUrsH+bZR6YIq7JxpnIus8EjiifGqsOl3qxz4SxE2E2RLQkJT+XrA= Received: by 10.78.161.4 with SMTP id j4mr432863hue.63.1205787515244; Mon, 17 Mar 2008 13:58:35 -0700 (PDT) Received: from ?5.7.226.109? ( [81.208.31.211]) by mx.google.com with ESMTPS id i5sm38716828mue.7.2008.03.17.13.58.32 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 17 Mar 2008 13:58:33 -0700 (PDT) Cc: Craig James , Greg Smith , pgsql-performance@postgresql.org Message-Id: From: Enrico Sirola To: Justin In-Reply-To: <47DEC8AB.8060608@emproshunts.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v919.2) Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10 Date: Mon, 17 Mar 2008 21:58:31 +0100 References: <47D00DB2.7040007@emolecules.com> <18451.1204824562@sss.pgh.pa.us> <47D0AFC1.5070305@emolecules.com> <08115901408538@mail.emproshunts.com> <47D93A43.6020503@emolecules.com> <016301c8854e$851e06e0$3101a8c0@JDell> <47DA1866.3050500@krogh.cc> <47DA37E1.6050104@emproshunts.com> <47DA5852.30004@emproshunts.com> <47DCBBF9.1090401@emproshunts.com> <47DD6F4C.2050208@emolecules.com> <47DEBD7C.2060204@emproshunts.com> <47DEC2AD.8080602@emproshunts.com> <47DEB978.2030307@emolecules.com> <47DEC8AB.8060608@emproshunts.com> X-Mailer: Apple Mail (2.919.2) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none X-Spam-Level: X-Archive-Number: 200803/357 X-Sequence-Number: 29311 Hi Justin, Il giorno 17/mar/08, alle ore 20:38, Justin ha scritto: > it is a RAID 10 controller with 6 SAS 10K 73 gig drives. The > server is 3 weeks old now. > > it has 16 gigs of RAM > 2 quad core Xenon 1.88 Ghz processors > 2 gig Ethernet cards. RAID controller perc 6/i with battery backup > 512meg cache, setup not lie about fsync > > WAL is on a RAID 0 drive along with the OS Did you try with a single raid 10 hosting DB + WAL? It gave me much better performances on similar hardware Bye, e.