I'm using AMD FX-8320 8-core 3.5 GHz processors with 16GB of unbuffered ECC
memory. (they're the best cost/performance processor available)
- Pete
-----Original Message-----
From: Jithin Raju
Sent: Thursday, August 15, 2013 1:04 PM
To: users@cloudstack.apache.org
Subject: Re: Variable speed CPUs
Hi Marty,
Not sure though, but I don't see the clock speed mentioned at the service
offering is set as a configuration parameter of the guest OS for kvm.
Rather the clock speed set for the service offering is used as a reference
of the resource utilization while allocating host for the instances
deployed using service offering.
Pete: Which is the model number of the AMD processor you are using?
From KVM perspective,We can specify the number of vCPUs to be allocated to
guests, also it supports which physical CPU to use:
"--cpuset=CPUSET
Set which physical cpus the guest can use. "CPUSET" is a comma
separated list of numbers, which can also be specified in ranges or cpus to
exclude. Example:
0,2,3,5 : Use processors 0,2,3 and 5
1-5,^3,8 : Use processors 1,2,4,5 and 8"
Thanks,
Jithin
On Thu, Aug 15, 2013 at 10:08 PM, Marty Sweet <msweet....@gmail.com> wrote:
In KVM and cloudstack 4.1.1 VM clock speed is enforced by the service
offering set to the Guest VM.
For example, if I were to make a service offering of 1vCPU running at 3Ghz
and I only have a host running (at clock speed) of 2Ghz then cloudstack
will refuse the start of the VM.
You can see your processor statistics by running lshw -C CPU on the host,
the clock speed shown will be the actual host clock speed, regardless of
BIOS technologies which may throttle or boost the frequency at anytime
depending on load.
Marty
On Thursday, August 15, 2013, Pete Johnson wrote:
> I am planning on running a mix of service offerings, mostly small but
> their will be some pretty large database/processing servers using 2+
cores.
> Won't know how large yet.
>
> - Pete
>
> -----Original Message----- From: Bradley Hieber
> Sent: Thursday, August 15, 2013 12:07 PM
> To: users@cloudstack.apache.org
> Subject: Re: Variable speed CPUs
>
> What is the service offering for the guest machines? The service
> offering
> governs the type of virtual CPU presented to the guest.
>
>
> On Thu, Aug 15, 2013 at 12:04 PM, Pete Johnson <pjohnso...@verizon.net
> >wrote:
>
> Hi,
>> I have build a small private cloud for an R&D project for one of my
>> clients. I have 3 hosts each with 16gb memory and 8 cores (AMD) per
host.
>> I’m using Cloudstack 4.1 and hosts are Ubuntu 12.04 w/KVM. These
CPUs
>> can vary clock speeds based on bios settings which is enabled. The
>> Cloudstack dashboard correctly estimates the CPU clock speed at its MAX
of
>> 3500 MHz. But, when I log onto the guests and run virt-top it says
>> 1400MHz
>> which I assume is its current throttled down clock speed. I am still
>> setting things up and have not had the chance to put the hosts under
>> enough
>> load to see of it clocks up. My questions are: Does Cloudstack
>> support
>> viewable clocked CPUs in hosts? How does Cloudstack support variable
>> clocked hosts from a real-time capacity load perspective and a usage
>> perspective.
>> Thanks
>> Pete Johnson
>>
>
>
>
>
> --
> Brad
>
