Open Stack

On 07/16/2018 10:30 AM, Toni Mueller wrote:
> 
> Hi Jay,
> 
> On Fri, Jul 06, 2018 at 12:46:04PM -0400, Jay Pipes wrote:
>> There is no current way to say "On this dual-Xeon compute node, put all
>> workloads that don't care about dedicated CPUs on this socket and all
>> workloads that DO care about dedicated CPUs on the other socket.".
> 
> it turned out that this is not what I should want to say. What I should
> say instead is:
> 
> "Run all VMs on all cores, but if certain VMs suddenly spike, give them
> all they ask for at the expense of everyone else, and also avoid moving
> them around between cores, if possible."
> 
> The idea is that these high priority VMs are (probably) idle most of the
> time, but at other times need high performance. It was thus deemed to be
> a huge waste to reserve cores for them.

You're looking for something like VMWare DRS, then:

https://www.vmware.com/products/vsphere/drs-dpm.html

This isn't something Nova is looking to implement.

Best,
-jay