NAME
powernap_calculator - estimate the expected power savings using
powernap in a cloud environment
SYNOPSIS
powernap_calculator [-h|--hosts NUM] [-p|--guests-per-host NUM]
[-g|--guests NUM]
OPTIONS
-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.
DESCRIPTION
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
EXAMPLE
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
AUTHOR
This manpage and the utility was written by Dustin Kirkland
<kirkland@canonical.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.