Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YvPs3-0007T4-GM for pgsql-admin@arkaria.postgresql.org; Thu, 21 May 2015 12:46:43 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YvPs2-0008Vs-UI for pgsql-admin@arkaria.postgresql.org; Thu, 21 May 2015 12:46:42 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YvPs1-0008Vc-Ui for pgsql-admin@postgresql.org; Thu, 21 May 2015 12:46:42 +0000 Received: from nm13-vm5.bullet.mail.ne1.yahoo.com ([98.138.91.235]) by magus.postgresql.org with esmtps (TLS1.0:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84) (envelope-from ) id 1YvPrx-0004CT-9S for pgsql-admin@postgresql.org; Thu, 21 May 2015 12:46:41 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s2048; t=1432212394; bh=CHx3RSPJaSlV48szvStCc5NJje5A5RW4UZoqWltlvUw=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:From:Subject; b=Du7i02kB5/0Xp+Z5FwWdx26SBBrMlkOX9A7t4GzE90zdNj/bbPw6QojBi60IGCPiqrhGXg2/v64dbtWMR0wNkxzHNuPYdZiUKKs9SXQVNqf61OtqCBOPoduMBbTtekCrWPUz8kAu+Xec6bXZm92xZg8RagFFpfy1+GkG3dFbl4eGXmm+5OtVrVS3Px0Ysypa02YYmCL3G/7vv3eTftPDvt/YtZ40nWDdV6/2BFe0PpkqEt6YBpyugip2lMQZzAPpifYBe3aHz16iWHmOI4/rZU6l3qxbVjjdykPwuJarZ9ImYiwaWhcvLS4nu16bSNG5LgDVLE0JIsHQ92j2fR4F9g== Received: from [98.138.100.116] by nm13.bullet.mail.ne1.yahoo.com with NNFMP; 21 May 2015 12:46:34 -0000 Received: from [212.82.98.79] by tm107.bullet.mail.ne1.yahoo.com with NNFMP; 21 May 2015 12:46:34 -0000 Received: from [127.0.0.1] by omp1016.mail.ir2.yahoo.com with NNFMP; 21 May 2015 12:46:34 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 116577.4212.bm@omp1016.mail.ir2.yahoo.com X-YMail-OSG: BJ8PgIMVM1ldFIRR2rVRB55VZMem5e7bw1Xmdy8U.vlNCLuBxGhmt6HBIEJ11V4 V4lYv5PsbW1hEd_gde1Z4TAkMn1QS2tKgcuxWCfA3A.NGamClfTAKrjMUNbSslFEoW8cMD0u9dLv C6CxhWDCuFA.5noj1DWmBn9fcg9lIwYqX8fcKCcBoHyy1SAT9kqCvmFxo6mpfhBn9lPdcmYfdkAE d1I3BNLMocv4LRZyLL4Ra_oZTxC15zSrBUZjDH_cxAV7WIWjukqZsgTGNjkBM_SwOFJD26eK0Fia PrdeG7JtAgzgoaXvtBRdrk4d.tI1Jg5d3VWUoq0spfMydqu.DFjaRGH8eGewHLVyUYP.69VfhrBy Przdap5Z8DjcuMg_t_FNBjbauCryXbRH2bkbOCIqkkIItu_obLo0IUUhv16mecieLkOLj1xcqQwd 7fMhH0aMZ6_OQBE1U5mVBrch5DjAFJsrUr2mW7sO3A8DOUXgdfJQC4Acj_KZ59bWVcWmGJai2C_V 3Sp5k Received: by 212.82.98.118; Thu, 21 May 2015 12:46:33 +0000 Date: Thu, 21 May 2015 12:46:32 +0000 (UTC) From: Glyn Astill Reply-To: Glyn Astill To: Thomas SIMON Cc: "pgsql-admin@postgresql.org" Message-ID: <1874969609.5822635.1432212392486.JavaMail.yahoo@mail.yahoo.com> In-Reply-To: <555DCF59.3060808@neteven.com> References: <555DCF59.3060808@neteven.com> Subject: Re: Performances issues with SSD volume ? MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Length: 524 X-Pg-Spam-Score: -2.0 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org > From: Thomas SIMON >To: Glyn Astill >Cc: "pgsql-admin@postgresql.org" >Sent: Thursday, 21 May 2015, 13:28 >Subject: Re: [ADMIN] Performances issues with SSD volume ? > > >disk was already in noop mode > >cat /sys/block/sdc/queue/scheduler > noop [deadline] cfq > > No, the output shows the i/o scheduler between the brackets. That says it's deadline for sdc. Of course deadline may well be the better option for you, but it's worth testing. -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin