[Users] vzctl --cpuunits max?

[Kir Kolyshkin]

On 06/13/2014 07:05 PM, Rene C. wrote:
> Now you mention it, I think I remember reading about that before. The
> cpuunits is really just a matter of percentages, isn't it?   If I
> understand right you could just as well start with a value of 100 for
> a server and then in this case assign 67 (as 2/3) to this VE, and re
> remaining 33 to remaining VE's. That would accomplish the same as
> setting this VE to ~1390000 (2/3 of ~2085000) and use the remaining
> ~694000 for remaining VE's -- right?

Right, and strictly speaking vzcpucheck is not needed.... except for the 
case
when you migrate some containers to a different node -- in this case those
units need some sort of a common denominator, and this is exactly what
vzcpucheck is trying to provide.

>
> On Sat, Jun 14, 2014 at 7:23 AM, Kir Kolyshkin <kir at openvz.org> wrote:
>> Short answer: vzcpucheck was written a long time ago, when the trees were
>> big and CPUs were small. Just divide the numbers it show by say 10 and
>> you'll be fine.
>>
>> On Jun 13, 2014 9:27 AM, "Rene C." <openvz at dokbua.com> wrote:
>>> I have a server with 12 cores and vzcpucheck reports following "power
>>> of the node":
>>> [root at server16 ~]# vzcpucheck
>>> Current CPU utilization: 646833
>>> Power of the node: 2085210
>>>
>>> Essentially I want to allow one container 2/3 of the power of this
>>> hardware node but if I set the value of --cpuunits to more than 500000
>>> it throws the error
>>>
>>> [root at server16 ~]# vzctl set 1602 --save --cpus 8 --cpulimit 800
>>> --cpuunits 500001
>>> Bad parameter for --cpuunits: 500001
>>>
>>> Setting it to 500000 works fine:
>>>
>>> [root at server16 ~]# vzctl set 1602 --save --cpus 8 --cpulimit 800
>>> --cpuunits 500000
>>> Setting CPU limit: 800
>>> Setting CPU units: 500000
>>> Setting CPUs: 8
>>> CT configuration saved to /etc/vz/conf/1602.conf
>>>
>>> What am I misunderstanding here?
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