I can confirm that stopping the machines and then making them run again
(not with the command reboot but first stop and then start) the
percentage reflects the correct proportion of GHz GHz allocated to
available for moltipliati factor overprovisioning.
Thanks
Il 22/04/2015 12:05, S. Brüseke - proIO GmbH ha scritto:
Dashboard is not wrong. You only have these resources left in your CS.
Here is an example as far as I remember:
Dashboard shows 100 GHz / 180 Ghz (cpu over provisioning is 1 / 3 Hosts each
24x 2.5Ghz)
You deploy 10 vms with 1 Ghz
Dashboard shows 110 Ghz / 180 Ghz (cpu over provisioning is 1 / 3 Hosts each
24x 2.5Ghz)
You change cpu over provisioning to 4
Dashboard shows 440 Ghz / 720 Ghz (cpu over provisioning is 4 / 3 Hosts each
24x 2.5Ghz)
You stop and start all vms
Dashboard shows 110 Ghz / 720 Ghz
Mit freundlichen Grüßen / With kind regards,
Swen Brüseke
-----Ursprüngliche Nachricht-----
Von: Abhinandan Prateek [mailto:abhinandan.prat...@shapeblue.com]
Gesendet: Mittwoch, 22. April 2015 06:35
An: users@cloudstack.apache.org
Betreff: Re: cpu overprovisioning
Can we fix the dashboard to reflect the available capacity given an over commit
?
On 22-Apr-2015, at 9:56 am, Bharat Kumar <bharat.ku...@citrix.com> wrote:
Also In case of change in the overcommit value the total capacity will
change instantaneously, but the used resource and the total available will
change when the capacity checker thread runs. The interval at which this will
run can be changed from the global settings.
Thanks,
Bharat.
On 22-Apr-2015, at 9:50 am, Bharat Kumar <bharat.ku...@citrix.com> wrote:
Hi,
The change in cpu overcommit factor will not change the amount of
resource that are available to you. It will change the way you want to use the
free resource available at that time. It won't change what was already
allocated.
for example if you have deployed the VMs with overcommit say 2 and after a
while you change the overcommit to 3, the used resource will be scaled based on
the change.
changing the overcommit cannot create resource. It can only change
the way you want to use the free resource. So now after the change
in overcommit you can deploy 3 times more VMs (of a given service offering)
than usual using the the resource that is free at the time of changing the
overcommit value. The perviously allocated resource cannot be freed until you
restart the VMs.
This link will tell you how resource allocation calculations are made.
https://cwiki.apache.org/confluence/display/CLOUDSTACK/CPU+and+RAM+Ov
ercommit
Thanks,
Bharat.
On 21-Apr-2015, at 11:20 pm, Rafael Weingärtner
<rafaelweingart...@gmail.com<mailto:rafaelweingart...@gmail.com>> wrote:
I have not looked at the code, but that seems odd.
Restarting VMs instances to update the resource usage/resource
availability when changing the overprovisioning factor.
On Tue, Apr 21, 2015 at 12:51 PM, S. Brüseke - proIO GmbH <
s.brues...@proio.com<mailto:s.brues...@proio.com>> wrote:
Please try to stop and start the vm. Maybe reboot is not working
here. You should start to see more free CPU after the first vm.
Mit freundlichen Grüßen / With kind regards,
Swen Brüseke
-----Ursprüngliche Nachricht-----
Von: Ugo Vasi [mailto:ugo.v...@procne.it]
Gesendet: Dienstag, 21. April 2015 16:40
An: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org>
Betreff: Re: AW: cpu overprovisioning
Hi Swen,
I try rebboting 2 vm but the amount of cpu MHz is not changed. Do I
have to restart all vm before you see a change?
Il 21/04/2015 16:16, S. Brüseke - proIO GmbH ha scritto:
This is because the factor of overprovisioning is attached to the
instance too! And this factor is only changing after rebooting the instance.
So after a change of cpu.overprovisioning.factor you need to reboot
all instances on this cluster which were running before this change was made.
Mit freundlichen Grüßen / With kind regards,
Swen Brüseke
-----Ursprüngliche Nachricht-----
Von: Ugo Vasi [mailto:ugo.v...@procne.it]
Gesendet: Dienstag, 21. April 2015 16:06
An: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org>
Betreff: Re: cpu overprovisioning
If I change the over-provisioning ratio in cluster-relative settings
(infrastructure->cluser->cluster-name->settings) the dashboard show
the sum of real GHz the overprovisioned amount of GHz (324GHz) as
aspected, but after a while also the sum of Ghz is multiplied by the
same factor making it unnecessary...
Il 21/04/2015 15:26, Bharat Kumar ha scritto:
In case of cloudstack, cpu capacity for host is total of cpus * no of
Ghz * overporvisoning.
total capacity = sum of capacities of individual hosts.
Thanks,
Bharat.
On 21-Apr-2015, at 6:49 pm, Abhinandan Prateek <
abhinandan.prat...@shapeblue.com<mailto:abhinandan.prat...@shapeblue.com>>
wrote:
Available CPU will be 3 times the actual CPU when over provisioned by
3.
The UI not showing the over provisioned value seems like a bug.
-abhi
On 21-Apr-2015, at 6:34 pm, Ugo Vasi
<ugo.v...@procne.it<mailto:ugo.v...@procne.it>> wrote:
Hi all,
we have a cluster of three machines with 16 CPU at 2.2GHz each and we
have set a cpu-overprovizioning to 3.
I would expect that the CPU system capacity of the dashboard appear
with the sum of megahertz CPUs multiplied by three instead I get the
real sum (108MHz).
I do not understand if this overprovisioning allows me to allocate
more MHz of real ones asthe documentation say since in reality the
virtual machines occupy on average only 20% of the computing power.
thanks in advance
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