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From "Pete Johnson" <>
Subject Re: Variable speed CPUs
Date Thu, 15 Aug 2013 16:21:00 GMT
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
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 

> 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


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