Cloud Power Management

Registered by Dustin Kirkland  on 2009-04-17

I was able to prove in Jaunty that at least some Ubuntu servers can successfully, suspend and hibernate, as well as resume from remote triggers such as wake-on-lan. See:

As Ubuntu is being promoted as a cloud computing hosting solution, I believe that an integral aspect will be managing the power consumption of the systems providing the virtualization services.

Workloads should be coalesced onto a subset of available hosts, optimizing cpu/memory utilization, via live migration. Under-utilized hosts should be suspended to a low power state, and awaiting a 'wake' signal when demand spikes. As such, these 'suspended' servers will consume a tiny fraction of the power of running systems, yet will be in a hot-standby mode, ready to operate again on demand within seconds.

We should integrate into existing cloud management frameworks (eucalyptus? openebula? ovirt? landscape?):
 a) tools for pro-active sysadmins, who want to manually migrate workloads and manually suspend/resume servers
 b) automatic algorithms that can perform these operations in an unattended manner when certain configurable thresholds or conditions are met


Blueprint information

Rick Clark
Dustin Kirkland 
Dustin Kirkland 
Series goal:
Accepted for karmic
Milestone target:
milestone icon karmic-alpha-6
Started by
Dustin Kirkland  on 2009-06-17
Completed by
Steve Langasek on 2009-09-24

Related branches



Discussion Points:
 * Identify a small, finite set of consumers (1 or 2) of this technology for the karmic development cycle (eucalyptus, landscape, open nebula, ovirt, etc).
 * Identify a working kvm live migration configuration and requirements
 * Identify the mechanisms/protocols by which hosts should be suspended and resumed
  * ssh + pm-suspend ?
  * wakeonlan ?
 * Identify the heuristics and tunables by which a program might use to auto suspend/resume hosts
-- Dustin Kirkland
 * Demo of scheduler prototype for power management on clusters for OpenNebula
-- Tino Vazquez


Work Items