Provided by: powernap_2.21-0ubuntu1_all
powernap_calculator - estimate the expected power savings using powernap in a cloud environment
powernap_calculator [-h|--hosts NUM] [-p|--guests-per-host NUM] [-g|--guests NUM]
-h, --hosts NUM Number of physical host systems in your cloud. -p, --guests-per-host NUM Number of virtual machine guests allowed to run on each physical host system (often, this is equal to the number of CPUs in the host system) -g, --guests NUM Number of guest virtual machines running in the cloud at a given instant.
This utility will use statistical analysis to determine an expected value of power savings within a cloud environment using powernap. For more information about the statistical term 'expected value', please refer to: http://en.wikipedia.org/wiki/Expected_value. http://launchpad.net/powernap
If your cloud consists of 8 hosts, each of which can run 4 guests, and you're currently running 16 guests, you can see your power savings expected value with: powernap_calculator -h 8 -p 4 -g 16
This manpage and the utility was written by Dustin Kirkland <email@example.com> for Ubuntu systems (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.