From owner-freebsd-fs@FreeBSD.ORG Mon Mar 18 17:28:01 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 13CE9F10 for ; Mon, 18 Mar 2013 17:28:01 +0000 (UTC) (envelope-from prvs=17892983bb=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id ADE6BB2A for ; Mon, 18 Mar 2013 17:28:00 +0000 (UTC) Received: from r2d2 ([46.65.172.4]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50002794477.msg for ; Mon, 18 Mar 2013 17:27:58 +0000 X-Spam-Processed: mail1.multiplay.co.uk, Mon, 18 Mar 2013 17:27:58 +0000 (not processed: message from valid local sender) X-MDDKIM-Result: neutral (mail1.multiplay.co.uk) X-MDRemoteIP: 46.65.172.4 X-Return-Path: prvs=17892983bb=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-fs@freebsd.org Message-ID: <1DD6360145924BE0ABF2D0979287F5F4@multiplay.co.uk> From: "Steven Hartland" To: "Davide D'Amico" References: <514729BD.2000608@contactlab.com> <810E5C08C2D149DBAC94E30678234995@multiplay.co.uk> <51473D1D.3050306@contactlab.com> Subject: Re: FreBSD 9.1 and ZFS v28 performances Date: Mon, 18 Mar 2013 17:28:16 -0000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2013 17:28:01 -0000 ----- Original Message ----- From: "Davide D'Amico" To: "Steven Hartland" Cc: Sent: Monday, March 18, 2013 4:13 PM Subject: Re: FreBSD 9.1 and ZFS v28 performances > Il 18/03/13 16:31, Steven Hartland ha scritto: >> >> ----- Original Message ----- From: "Davide D'Amico" >> >> To: >> Sent: Monday, March 18, 2013 2:50 PM >> Subject: FreBSD 9.1 and ZFS v28 performances >> >> >>> Hi all, >>> I'm trying to use ZFS on a DELL R720 with 2x6-core, 32GB ram, H710 >>> controller (no JBOD) and 15K rpm SAS HD: I will use it for a mysql 5.6 >>> server, so I am trying to use ZFS to get L2ARC and ZIL benefits. >>> >>> I created a RAID10 and used zpool to create a pool on top: >> >> While having a separate ZIL disk is good, your benefits may well be >> limited if said disk is a traditional HD, better to look at enterprise >> SSD's for this. The same and them some applies to your L2ARC disks. > > I'm using SSD disks for zfs cache and zfs log: > > mfi0 Physical Drives: > 0 ( 279G) ONLINE SAS E1:S0 > 1 ( 279G) ONLINE SAS E1:S1 > 2 ( 558G) ONLINE SAS E1:S2 > 3 ( 558G) ONLINE SAS E1:S3 > 4 ( 558G) ONLINE SAS E1:S4 > 5 ( 558G) ONLINE SAS E1:S5 > 6 ( 119G) ONLINE SATA E1:S6 > 7 ( 119G) ONLINE SATA E1:S7 So RAID10 on just 6 disks in effect just 3 active spindles? If so then your throughput of 400MB/s is about right. Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.