From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 38B317F37 for ; Thu, 22 Oct 2015 13:23:32 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay1.corp.sgi.com (Postfix) with ESMTP id 2B19C8F8033 for ; Thu, 22 Oct 2015 11:23:28 -0700 (PDT) Received: from posta3.euchiamail.it (posta3.euchiamail.it [46.30.241.112]) by cuda.sgi.com with ESMTP id 64EFPfRYTYeFVA4H (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Thu, 22 Oct 2015 11:23:25 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by posta3.euchiamail.it (Postfix) with ESMTP id 41CA1234F2A for ; Thu, 22 Oct 2015 20:23:24 +0200 (CEST) Received: from posta3.euchiamail.it ([127.0.0.1]) by localhost (sufferone.euchiamail.it [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id HoZyfPkU9Dn1 for ; Thu, 22 Oct 2015 20:23:22 +0200 (CEST) Received: from linux (2-227-160-98.ip186.fastwebnet.it [2.227.160.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by posta3.euchiamail.it (Postfix) with ESMTPSA id 4F8F122598E for ; Thu, 22 Oct 2015 20:23:21 +0200 (CEST) Date: Thu, 22 Oct 2015 20:23:24 +0200 From: "krautus@kr916.org" Subject: hdd + ssd Message-ID: <20151022202324.5f00807f@linux> MIME-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com Hello I'm trying to understand why and how to add one or more SSD (as a cache drive / keeping xfs log) to a traditional spinning xfs storage volume. I mean: which data will go to the ssd ? Inodes and dentries will go to the ssd ? Will the _read_ performance increase ? In general I'm looking to increase (cache) the reading performance of folders with a lot of small files (emails), for email servers. Feel free to let me rtfm :) I'd gladly study the documentation / articles / benchmarks but my google-fu isn't in best shape. Thank you, Mike _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs