Bellosa, Frank
:
From Centrally Planned to Social Market Economy: Accounting, Billing and Trading of Energy for Dynamic Power Management.
Erlangen:
FAU.
2000
TR-I4-00-03.- Interner Bericht.
1 Seiten.
Abstract:
Most of the users of mobile devices are more interested in the benefit of use than in the
internal mechanisms and policies of system and application software.
In a dynamic world with mobile code and data, fixed policies and parameters that were
predefined by the manufacturer do no longer hold. Therefore the consumer is asked to map the
demands of the intended use to the parameters of the system. Serious power management is not
possible with current operating systems, in which adjusting power-management parameters e.g.,
idle-times going ahead of power-down operations, is at best a black art. The setting of those
parameters resembles the planning in centrally planned economies that neglects the individual
demands, skills and properties of the controlled objects.
Our approach to dynamic power management shifts away from a system-centric global
energy-management to a data-centric information processing. Within a three-dimensional space,
data is defined by a triple of information, location and time. Modification of information
(= computing), moving information from one location to another (= transport) and holding of
information over time (= storage) imply some costs. The costs of each operation have to be
accounted and billed to a principal. The principal can ask for a price quotation for a
requested operation. The system can offer some services with variing quality and price.
In trade a price for a single operation or bulk order is fixed. By assigning budgets and
quality of service demands to data processing operations, a user can influence power
management policies in a plain manner that gives the system enough freedom to tune the
execution according to the application's demands
