Date: Tue, 24 Nov 2015 13:13:06 -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: <21F00F37-FC30-4AE5-B5E5-7FD8C22004E9@langille.org> In-Reply-To: <E8E50E34-B48C-42EB-95D0-19A5272D1BC9@langille.org> 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> <D85EFCE4-3CBE-4E5D-92FB-7C2405457A8F@langille.org> <CAOfEmZjXaLfkV6DuokMjQzPnWFdHnfsQQxZUfdFK=7wZV0oDFw@mail.gmail.com> <E8E50E34-B48C-42EB-95D0-19A5272D1BC9@langille.org>
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> On Nov 18, 2015, at 4:12 PM, Dan Langille <dan@langille.org> wrote: >=20 >=20 >> On Nov 17, 2015, at 9:31 PM, Marcelo Araujo <araujobsdport@gmail.com> = wrote: >>=20 >> 2015-11-18 10:23 GMT+08:00 Dan Langille <dan@langille.org>: >>=20 >>>=20 >>>> 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: >>>>>=20 >>> = 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. >>>=20 >>> I am OK with this. >>>=20 >>>> 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. >>>=20 >>> I will be doing VLANS, which have yet to be set up. >>>=20 >>> 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. >>>=20 >>> I seem to recall someone suggesting PXE boot and configuring the = system >>> remotely. Does anyone >>> recall that? That aspect of the discussion was not recorded: >>> https://wiki.freebsd.org/201510DevSummit/Performance >>>=20 >>>=20 >> Bapt@ mentioned that, this is the way how we are doing in another = project. >> But in my point of view, it is not a must for our case! >>=20 >> The PXE wold be good if we try to test different of OS flavors, or = build >> different images. >=20 > OK. The only thing holding us back is: >=20 > - adding the air filters to the case > - moving to the new switch with the new VLANs >=20 > It's now a matter of time. Done. The server is ready for access. Please send me your ssh-key off-list and I will create a login for you. We do have some data on the system: $ zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP = HEALTH ALTROOT benchmarking 21.8T 6.44T 15.3T - 11% 29% 1.00x = ONLINE - music 30T 5.58T 24.4T - 9% 18% 1.00x = ONLINE - random_mirror 2.72T 372K 2.72T - 0% 0% 1.00x = ONLINE - zroot 220G 1.79G 218G - 0% 0% 1.00x = ONLINE - The music pool has about 1.4TB of music files for testing via copy. =E2=80=94=20 Dan Langille http://langille.org/
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