Zfs heavy io writing | zfskern txg_thread_enter

[Michelle Sullivan]

Steven Hartland wrote:
> On 19/02/2016 13:06, Michelle Sullivan wrote:
>> Steven Hartland wrote:
>>>
>>> On 19/02/2016 11:58, Michelle Sullivan wrote:
>>>> Niccolò Corvini wrote:
>>>>> Hi, first time here!
>>>>> We are having a problem with a server running FreeBsd 9.1 with ZFS
>>>>> on a
>>>>>     
>>>> You should upgrade to a supported version first...  9.3 would probably
>>>> be the best (rather than 10.x) as it's still supported and uses the
>>>> same
>>>> ABI (ie you should need to reinstall all your ports/packages - though
>>>> you should because it sometimes breaks things - at least check for
>>>> broken things :) .)
>>>>
>>>> If you're not familiar "freebsd-update -r 9.3-RELEASE upgrade" will
>>>> help
>>>> you do it without too many problems.
>>> 9.3 is still ancient, and while "supported" its not in active
>>> development, and to be blunt no one will be interested in helping to
>>> diagnose any actual issue on something so old.
>> So supported is not really supported... Is that an official position?
> Supported for 9.x, which is a "Legacy Release", I would say is
> supported for security and other critical issues only, which is the
> same for pretty much every project / product out there.
Oh, it's legacy is it?  Funny you should say that ... "Production =
Legacy" then...?




Oh wait... it's support ... lets look at what the "support lifecycle"
says on it..








>>> 10.x has a totally different ZFS IO scheduler for example, so its
>>> differently for most workloads.
>> But the user is on 9.x not 10.x and 10.x changes a lot more than just
>> the ZFS IO scheduler.  If this is a production machine, then an upgrade
>> to 9.3 may be easier as it would require less regression testing....  Or
>> is this another case of people don't run FreeBSD in production
>> environments so it doesn't matter...?
>
> Yes but 9.x is already legacy and becomes unsupported in December of
> this year, so the process of migration to 10.x should be well on the
> way by now tbh.

So is 10.1 and 10.2 then... Oh so that will be why you're telling them
to upgrade to a non-supported beta release....!

Seriously...!


(Sorry for the html email with jpegs embedded, hate it myself -
especially to mailing lists, but a picture is worth a 1000 words
especially when screen grabbed from a few minutes ago...)

-- 
Michelle Sullivan
http://www.mhix.org/