Date: Tue, 17 Nov 2015 21:23:03 -0500 From: Dan Langille <dan@langille.org> To: Marcelo Araujo <araujo@FreeBSD.org> Cc: freebsd-performance@freebsd.org Subject: Re: Measuring ZFS configuration differences Message-ID: <D85EFCE4-3CBE-4E5D-92FB-7C2405457A8F@langille.org> In-Reply-To: <CAOfEmZi79Us3SPOZ9zQ-siqLBQn0N2LCYLbuTQEDac0LCkq6bA@mail.gmail.com> References: <8B37FEDC-218A-4071-8CB7-48361BB72B1D@langille.org> <14A0EA61-6545-42BB-910E-62C752D4396C@langille.org> <CAOfEmZgKXXfUCY0L-%2Bw=op_9mfAgy23hjDr=xWej8TM_RsJCUg@mail.gmail.com> <A6A23726-A6AE-41C8-9E18-C1057A34D0E4@langille.org> <CAOfEmZi79Us3SPOZ9zQ-siqLBQn0N2LCYLbuTQEDac0LCkq6bA@mail.gmail.com>
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> On Nov 17, 2015, at 8:46 PM, Marcelo Araujo <araujobsdport@gmail.com> = wrote: >=20 > 2015-11-18 3:14 GMT+08:00 Dan Langille <dan@langille.org>: >=20 >>=20 >> On Nov 12, 2015, at 1:30 AM, Marcelo Araujo <araujobsdport@gmail.com> >> wrote: >>=20 >>=20 >>=20 >> 2015-11-12 6:34 GMT+08:00 Dan Langille <dan@langille.org>: >>=20 >>> On Oct 12, 2015, at 1:00 PM, Dan Langille <dan@langille.org> 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. >>>=20 >>> 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? >>>=20 >>>> 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? >>>=20 >>> =E2=80=94 >>> Dan Langille >>> http://langille.org/ >>>=20 >>>=20 >> Hello Dan, >>=20 >> Yes, was me :) >>=20 >> I mention about zopkio test framework. >> I gave a presentation last weekend at PyCon Hong Kong about it. >>=20 >> Here is my slides: >> = http://www.slideshare.net/araujobsd/functional-and-scale-performance-tests= -using-zopkio >>=20 >> The good of Zopkio is, we can write tests at once and run it as much = as we >> want in different machines. Also Zopkio depends of Naarad, that can = parse a >> CSV file and create metrics and SLA over those metrics, plot graphs = and so >> on. Pretty nice tool!!! >>=20 >> I'm wondering if we could start to test something and maybe show it = at >> AsiaBSDCon and BSDCon(Canada) next year? What do you think? >> What I need right now would be a list of tests that we want to = perform as >> well as what parameters we would like to take as metrics to compare.\ >>=20 >>=20 >> For tests, we can start with this list: >> https://github.com/dlangille/zfs_benchmarks/issues >>=20 >> We can start as soon as I figure out how to provide access to the >> testers. See above re serial connection. >>=20 >> I want to provide access, but I want to keep access restricted to = only >> this box and not to the rest of my home LAN. I plan to do this via a >> VLAN. >>=20 >> I could fire up a Rasperberry Pi and allow ssh into that. Will that = be >> enough >> power for what you need to do? >>=20 >>=20 > First of all, thanks to share the tests cases. >=20 > If I use zopkio, the best would be access SSH direct to the target = machine > where I need to run the tests. For zopkio, I need to have my SSH KEY = on the > target machine. I am OK with this. > As I don't know your network, maybe what you could do is: Via = RasperBerry, > forward the SSH to the target machine, I will pass-through via your > RasperBerry where you can control the access for the rest of your LAN. >=20 > Another approach could be, two different subnets and a firewall. Or as = you > said, VLANS. I will be doing VLANS, which have yet to be set up. The target system will have ZFS pools can be configured for different = tests (i.e. raidz2 vs raidz3). This will involve gpart etc because the drives & pools will need to be = 'wiped' between different test runs. I seem to recall someone suggesting PXE boot and configuring the system = remotely. Does anyone=20 recall that? That aspect of the discussion was not recorded: = https://wiki.freebsd.org/201510DevSummit/Performance =E2=80=94=20 Dan Langille http://langille.org/
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