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Power optimization techniques and tools for embedded Linux devices

Category: Software
Scope: 2 students completing 30 HE credits (20 weeks) each

Background
Reducing power usage in embedded systems is getting more important all the time. It is especially important to make sure that the system does not consume too much power when being idle from its main tasks. Since modern hardware has good support for power save modes, there has been some recent attention to make sure that the software is "power save friendly", i.e. that it does not wake up the hardware all the time, when there is nothing important to do.

Goals
Present power optimization techniques and tools for embedded Linux devices and specific results for Axis network video devices.

Investigate the Linux community to find and document techniques and tools used for power optimizations of Linux software and systems. Try the tools and techniques on Axis embedded network cameras, measure results and suggest and try improvements on the Axis software. The main steps of the thesis will be:

• Find suitable tools and techniques for analyzing power usage. If needed, adapt to Axis environment.
• Find some usage scenarios with lots of possible idle time, that will benefit from power save.
•  Suggest and try some optimizations and measure the results.
• Investigate if the Axis camera hardware is lacking features needed for effective power save implementation.

More information
For more information, contact Fredrik Hugosson.

Application
See the application instructions before applying.

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