From owner-freebsd-performance@freebsd.org Wed Nov 11 22:34:22 2015 Return-Path: Delivered-To: freebsd-performance@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E8185A2C003 for ; Wed, 11 Nov 2015 22:34:22 +0000 (UTC) (envelope-from dan@langille.org) Received: from clavin1.langille.org (clavin.langille.org [162.208.116.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "clavin.langille.org", Issuer "StartCom Class 2 Primary Intermediate Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id BC4981822 for ; Wed, 11 Nov 2015 22:34:21 +0000 (UTC) (envelope-from dan@langille.org) Received: from (clavin1.int.langille.org (clavin1.int.unixathome.org [10.4.7.7]) (Authenticated sender: hidden) with ESMTPSA id CDC8B2599 ; Wed, 11 Nov 2015 22:34:12 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.1 \(3096.5\)) Subject: Re: Measuring ZFS configuration differences From: Dan Langille In-Reply-To: <8B37FEDC-218A-4071-8CB7-48361BB72B1D@langille.org> Date: Wed, 11 Nov 2015 17:34:12 -0500 Cc: freebsd-performance@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <14A0EA61-6545-42BB-910E-62C752D4396C@langille.org> References: <8B37FEDC-218A-4071-8CB7-48361BB72B1D@langille.org> To: Marcelo Araujo X-Mailer: Apple Mail (2.3096.5) X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Nov 2015 22:34:23 -0000 On Oct 12, 2015, at 1:00 PM, Dan Langille wrote: >=20 > Following up on the discussions during EuroBSDCon 2015 (Stockholm) = during the FreeBSD Developer > Summit regarding various ZFS configuration settings, I write to start = our implementation phase now that some > usual suspects have joined the list. >=20 > re https://wiki.freebsd.org/201510DevSummit/Performance >=20 > I think the first order of business is granting access rights to the = server (varm) in question: >=20 > http://dan.langille.org/2015/07/19/varm/ >=20 > During the workshop, mention was made of serial access. I can arrange = that. >=20 > The server has IPMI, however, my first thought: >=20 > 1 - connect a USB-serial cable to varm & link that to another server = in my rack. Marcelo: At EuroBSDCon, was it you who mentioned a particular = configuration for the test machine which made it easy to configure and run tests? Was it PXE booting or something? > 2 - create a jail in that server and give it access to that serial = connection > 3 - redirect incoming port XYZ to that jail via a public-key-only ssh = connection > 4 - give people access >=20 > Any suggestions? =E2=80=94=20 Dan Langille http://langille.org/