openstack team mailing list archive

[Yuriy Taraday <yorik.sar@xxxxxxxxx>]

Just note that since Essex release Nova by default use fill-first cost
function, meaning that nodes with less free RAM will be preferred for
new instances.

Kind regards, Yuriy.


On Sun, Apr 29, 2012 at 8:28 PM, Szymon Grzybowski <semyazz@xxxxxxxxx> wrote:
> Hi,
>
> Me and my colleague are doing research about openstack and energy efficiency
> during part of our master thesis about cloud computing. And mayby we would
> like to write something inside nova-scheduler to dynamically manage vms from
> cloud administrator's point of view. the general idea is to automate process
> of vm migration to suite current policy. For example, we have 10 servers in
> cloud with nova-compute, each is capable of running 5 vm. I'd like to run 20
> vms. Aaccording to current nova-scheduler (filters), each server will run 2
> VMs, but it would be cheaper (this is policy defined by administrator) if we
> run all of them on just 4 servers. of course, cloud has to keep proper QoS
> rate (response time etc.). This is general idea.
>
> Energy efficiency is really popular topic, when we talk about
> servers,datacenters and virtualization, but I can't find any papers about it
> in context of openstack. Are there any projects doing such researches or
> articles? in fact it would be really surprising if there is nothing about
> energy efficiency in context of openstack.
>
> Cheers,
>
>
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