Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Xz2aS-0001Jz-3m for pgsql-performance@arkaria.postgresql.org; Thu, 11 Dec 2014 12:11:16 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1Xz2aR-0001pZ-6K for pgsql-performance@arkaria.postgresql.org; Thu, 11 Dec 2014 12:11:15 +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 1Xz2aQ-0001pT-7K for pgsql-performance@postgresql.org; Thu, 11 Dec 2014 12:11:14 +0000 Received: from mail-wi0-x234.google.com ([2a00:1450:400c:c05::234]) by makus.postgresql.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.80) (envelope-from ) id 1Xz2aM-00014X-ND for pgsql-performance@postgresql.org; Thu, 11 Dec 2014 12:11:12 +0000 Received: by mail-wi0-f180.google.com with SMTP id n3so8395258wiv.13 for ; Thu, 11 Dec 2014 04:11:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=qUatR4VgSIlu02XczDLVz0yye0jKc5tXytnS53R+AOo=; b=dM2B3E+kY9aY3Zu4anoh9kon4k9JHKzxtIMOVC0muliXiq7WqN7J4XV5ZJWhzaeFnh jGLW8DemCDB1eGoXDYW4TeEKzlSduo2mmxF8VRzoolsDMLrSVDb2oZ1X7yvxDabmpkB4 TkzX3vFQMPZP2XQCVgyecAFENp5j4eC6HMJNc7IcxldzFc5VC2fEuQgf4S8KE0OK9T3T 5ndLFv7scjXDnN8cQvKuxIuKT4QxBhT0WCUGNS1S0gPhQsnSu+UD99L8MV0F1npz2Q0a 1oj7AOJwj6G2XPz0rbSnLakfnXB8XqW49Kjj5Wr9khT2/ndwLHrTTJxS7s95atFgBu0f 3Wkg== X-Received: by 10.194.62.163 with SMTP id z3mr16379641wjr.74.1418299868202; Thu, 11 Dec 2014 04:11:08 -0800 (PST) Received: from wgaybook.corp.wargaming.local (by1-office.wargaming.net. [178.172.239.242]) by mx.google.com with ESMTPSA id ry19sm1477320wjb.3.2014.12.11.04.11.06 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 11 Dec 2014 04:11:07 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 8.0 \(1990.1\)) Subject: Re: Tuning the configuration From: Evgeniy Shishkin In-Reply-To: <548987D7.7040304@opinioni.net> Date: Thu, 11 Dec 2014 15:11:05 +0300 Cc: mfatticcioni@mbigroup.it, pgsql-performance@postgresql.org Content-Transfer-Encoding: 7bit Message-Id: <6B084BAC-82C6-410A-88D4-9CDC01DA8C09@gmail.com> References: <548823F8.4070003@mbigroup.it> <548987D7.7040304@opinioni.net> To: Andrea Suisani X-Mailer: Apple Mail (2.1990.1) X-Pg-Spam-Score: -2.7 (--) 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 11 Dec 2014, at 15:02, Andrea Suisani wrote: > > On 12/10/2014 11:44 AM, Maila Fatticcioni wrote: >> 2- I would like to use the two SDD to store the wal file. Do you think >> it is useful or how should I use them? > > I definitely would give it a try. > I don't understand the logic behind using drives, which are best for random io, for sequent io workloads. Better use 10k sas with BBU raid for wal, money wise. -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance