From owner-freebsd-performance@freebsd.org Mon Oct 12 19:56:31 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 6FE83A12FE1 for ; Mon, 12 Oct 2015 19:56:31 +0000 (UTC) (envelope-from dan@langille.org) Received: from clavin2.langille.org (clavin2.langille.org [199.233.228.197]) (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 496C7ABB for ; Mon, 12 Oct 2015 19:56:30 +0000 (UTC) (envelope-from dan@langille.org) Received: from (clavin2.int.langille.org (clavin2.int.unixathome.org [10.4.7.7]) (Authenticated sender: hidden) with ESMTPSA id E45FA86DA for ; Mon, 12 Oct 2015 19:56:28 +0000 (UTC) Content-Type: multipart/signed; boundary="Apple-Mail=_D70FC13E-6769-43AE-A34A-75B84FC68FF1"; protocol="application/pgp-signature"; micalg=pgp-sha512 Mime-Version: 1.0 (Mac OS X Mail 9.0 \(3094\)) Subject: Re: Measuring ZFS configuration differences X-Pgp-Agent: GPGMail 2.6b2 From: Dan Langille In-Reply-To: <8B37FEDC-218A-4071-8CB7-48361BB72B1D@langille.org> Date: Mon, 12 Oct 2015 15:56:22 -0400 Message-Id: <85CC5C81-9A5A-47D4-9111-DCE5DD7E2E96@langille.org> References: <8B37FEDC-218A-4071-8CB7-48361BB72B1D@langille.org> To: freebsd-performance@freebsd.org X-Mailer: Apple Mail (2.3094) 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: Mon, 12 Oct 2015 19:56:31 -0000 --Apple-Mail=_D70FC13E-6769-43AE-A34A-75B84FC68FF1 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > 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. > 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? For the record, we are working with spinning HDD. Donations of SSD = (either physical or remote usage thereof) are welcomed. Our intent is to publish reproducible results which are = not dependent upon your particular choice of HDD (and hopefully, SSD). =E2=80=94 Dan Langille http://langille.org/ --Apple-Mail=_D70FC13E-6769-43AE-A34A-75B84FC68FF1 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQJ8BAEBCgBmBQJWHBBsXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ1MTE2RjM0ODIzRDdERDM4OTY0OUJBNzdF QjIxNTlERUU5NzI3MzlGAAoJEOshWd7pcnOfY2MP/iCUxRx+xTcnheBa35qq9fcl erZ97ztKLY437XZGy5yKOS3V+Ae5DpVKkX8YKsdqBDXcdAjivX9u75hHfhaCP7GY ilMKiZLMyCQ24qABxLq6gNXFmTbtmag91928MZGUAvt8SNs/Xrt+S/r4kVJktRTC 6MChSBr99grJD7cShMStbRqkgh4wzdcjILlEJhXREz4S4ecy8e5BefnYneYVpV1T dptJYffnxl/MIBUrTo/i/mTzs9bvrfpjWp2UZzrQqQvcNKVaXA7csGlk0X4DgsK3 p3oxVc+Z5jNptDnxB3Y1FTtJuGjO/yE+7o1S2DC4cY3SJ+vEQQlZSzk7ZvPi9rfd H83LEMHI3HcrovFS5g3geQ/wmZbGUWQsQfqMFaFMwZz07yQRV/u8cUcaHC8pTWVH pnb5a34grGZ+sFYJMyy+GIf/wRL0Y8ETpZEywfTVjtKXbD5Ty1gBURY0PCP1zgL4 RSG7pzbdDdTaIempoaXoNcmuXb9a2xjv9KlqDhZ6cAaxkjQ1OM4BIOo7V08QpBw5 I+ad1XUcXpiceAm0WQXIru17t2cUo8dAtIfES06WqkW0IKdU/OG3G0W/idVTvBdl rVB55xJTXjehXzQr1FdZhZ7ntcwJ+HU9pn7xdmV25Df8vlIMM2hy1E5tJ6Xk2i3N NggSk3YCnRKZQ+NmlZN5 =ECBe -----END PGP SIGNATURE----- --Apple-Mail=_D70FC13E-6769-43AE-A34A-75B84FC68FF1--