Re: number of cores
Let me test this also, on clean 4.11.2 RC5... (KVM)
On Mon, 19 Nov 2018 at 18:47, Dag Sonstebo <Dag.Sonstebo@xxxxxxxxxxxxx>
> Andrija - not sure about your 3.4GHz cores - must a be a simplified lookup
> somewhere making assumptions.
> Eric - have just tried your scenario in my 4.11.2RC5 lab (admittedly with
> VMware, not KVM) - and I can see my core allocation keeps going up, e.g. at
> the moment it sits at 166% - 10 out of 6 cores used. However it doesn't
> stop me starting new VMs (only using 30-40% CPU and memory).
> Are you sure it's the core count preventing you from starting VMs? What do
> the logs say? (Also keep in mind your system VMs are now using more
> resources that before).
> Dag Sonstebo
> Cloud Architect
> On 19/11/2018, 17:15, "Eric Lee Green" <eric.lee.green@xxxxxxxxx> wrote:
> On 11/19/18 03:56, Andrija Panic wrote:
> > Hi Ugo,
> > Why would you want to do this, just curious ?
> > I believe it's not possible, but anyway (at least with KVM, probably
> > for other hypervisors) it doesn't even makes sense/use, since when
> > deploying a VM, ACS query host free/unused number of MHz (GHz), so
> it's not
> > even relevant for ACS - number of cores in not relevant in ACS
> > during VM deployment.
> I think you are misunderstanding the question. I have 72 cores in my
> cluster. Each of my hosts has 24 cores. With 4.9.2, I can provision 10
> virtual machines, each of which is programmed with 8 cores, meaning 80
> cores total. They on average are using only 25% of the CPU available
> them (they need to be able to burst) and my compute servers on average
> are only 40% CPU used so that is not a problem.
> When I tried upgrading to 4.11.1, the dashboard showed a new value "#
> of CPU Cores" in red and showed that I had more cores provisioned for
> virtual machines than available in the cluster (80 versus 72
> Cloudstack would not launch new virtual machines. I shut down two
> virtual machines, and now I can launch one, but not the second because
> would need 80 cores total in my cluster. I cannot launch all 10
> machines because I would need 80 cores total. I know this because I
> tried it. I then used MySQL to tell Cloudstack that each of my hosts
> 48 cores (144 total), and suddenly I can launch all of my virtual
> Is this a bug in 4.11.1? Or is this expected behavior? If expected
> behavior, is there a way to over-provision "total # of cores used"
> than to go into MySQL and tell it that my hosts have more cores than
> they in fact have? (Note that my service offerings are limited to 8
> cores max, so there's no way to launch a single VM with more cores
> exists on a physical host, since all my hosts have 24 cores).
> > On Mon, Nov 19, 2018, 11:31 Ugo Vasi <firstname.lastname@example.org
> >> Hi all,
> >> in the dashboard of an ACS installation vesion 184.108.40.206 (Ubuntu
> >> with KVM hypervisor), the new entry "# of CPU Cores" appears.
> >> Is it possible to over-provision like for MHz or storage?
> >> Thanks
> >> --
> >> *Ugo Vasi* / System Administrator
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