Slides of the session presented at foss.in 2009,Bangalore(http://foss.in/2009/schedules/talkdetailspub.php?talkid=66)

1. Go Green – Save Power
By
Rajesh Sola
NBKRIST,Vidyanagar
Dec 2nd,FOSS.IN,Bangalore

2. Green Computing
● Global warming
● Some facts
● Power Optimization
● Some solutions

3. PowerTop
● Free and open source tool from lesswatts.org
● Getting a copy
● Features
● CPU utilization details
● Show causes for more power consumption
● Tips for optimal tuning

4. What PowerTop Can do
● A Small Demo
● C State Information
● Wakeups per second
● Power usage
● Top causes for wakeups
● Suggestions

5. Contribute
● Working on bugs
http://bugzilla.lesswatts.org/
● New Suggestions
● UI Enhancement

6. UI Enhancement
● Ncurses based original UI
● Qt based UI under development - qpowertop
● Demo

7. Qt – A Quick Tour
● Qt Widgets
● Signals & Slots
● Working with Qt creator

8. Code Changes
● C++ coding
● Replacing ncurses calls with qt slots
● Polling, Refresh
● Main changes in
● powertop.* display.*

9. TODO
- Split View
- Action on suggestions
- Colour Highlighting
- Pictorial Representations
- Panel Notifications
- Other Optimizations
- Profiling
- Documentation & Coding Standards

10. Further Scope
- KDE App
- Plasmoid

11. Links
● http://www.lesswatts.org/projects/powertop/
● http://code.google.com/p/qpowertop
● Getting the code
svn co http://qpowertop.googlecode.com/svn/trunk/ qpowertop
● IRC
– #lesswatts, #powertop on irc.oftc.net
– #qt , #kde-in on irc.freenode.net

12. Thank You
Email:- rajesh@lisor.org
IRC Nick :- sola (freenode server)