CELF Project Proposal/Add behavior-oriented power management
- Add behavior-oriented power management
- Evgeny Ivashko
Every user has behavioral patterns. Behavioral pattern is the sequence of actions, running applications and so on. Some of these patterns are common and the others are individual. Knowing the patterns the program (that should be developed as the result of the project) can optimize the OS's behaviour to reduce energy consumption, response time and etc.
For example (common pattern), if user starts a video in the full-screen mode the program can automatically suspend some subsystems (like USB or CD/DVD-rom). Also the program can "hibernate" unused applications. Another example (individual pattern): if the user usually runs OpenOffice.org after the game or two of Mahjong, the program can automatically prepare the OS to quick start of the OOo.
The main result of the project should be the program (daemon) that can in (semi)automatic way change the power and application profiles, that should get
- reducing the device's energy consumption;
- reducing the OS's response time;
- reducing amount of used OS's resources.
This project should actively use results of such projects as:
- PowerTOP (http://www.lesswatts.org/projects/powertop/)
- BLTK (http://www.lesswatts.org/projects/bltk/)
The approach is well-proven in many different domains (http://en.wikipedia.org/wiki/Data_Mining#Notable_uses).
- This should take about 6 months.
Alexander Voytov wrote:
QNX claims real time power supply management for its car application embedded solution.
On the PC like laptop/desktop there is the ACPI standard which version 3 I'm not aware is implemented by anyone on any platform. The problem with the PS(power supply) control is - it is an analog device in the most common case, but there is a growing market of the digital control PS. Means, you can control such devices like any other real time interfaces.
I'm not aware about the PS behaviour control implementation, except the RF board design. On majority the RFID boards there is a signal strength pin to power up the board in case the RFID signal is detected. This is a proprietry design to wake up all board drivers and interfaces for converting an oncoming analog RF signal into, for instance, the USB or a serial packet. On some such devices the Linux kernel is implemented, on majority I'm aware about - the home growth SW state machine.