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.

powernap                                           18 Aug 2009                            powernap_calculator(1)