Spotlight | Reviews | Current Issue | Academy | Newsletter | Subscribe | Shop |
Departments

Partner Links
Make your own website
WinWeb OnlineOffice
Comparing prices of hardware is worth it.
Price Comparison
UK Linux Jobs
What:
Where:
Country:
vacatures Netherlands njobs Linux vacatures
arbeit Deutschland njobs Linux arbeit
work United Kingdom njobs Linux jobs
Lavoro Italia njobs Linux lavoro
Emploi France njobs Linux emploi
trabajo Espana njobs Linux trabajo

user friendly

Admin Magazine

ADMIN Network & Security

Subscribe now and save!

ADMIN - Explore the new world of system administration! Special introductory offer! Order by September 30th to save 10% off the regular subscription price! Each issue delivers technical solutions to the real-world problems you face every day. Learn the latest techniques for better:

  • network security
  • system management
  • troubleshooting
  • performance tuning
  • virtualization
  • cloud computing

 

on Windows, Linux, Solaris, and popular varieties of Unix.

http://www.admin-magazine.com/

  linux-magazine.com » Issues » 2008 » 87 » DOWNSTREAM  

Print this page. Recommend
Share

The sys admin’s daily grind: PowerTOP

DOWNSTREAM

Beep and power off! Large displays and faster CPUs seemingly wipe out the benefits of advances in battery technology. PowerTOP helps power hogs keep their laptops running without mains power.

Linux introduced the tickless kernel in version 2.6.21 (or 2.6.23 for 64-bit machines); that is, the kernel does away with the legacy fixed 250Hz timer. Theoretically, this should increase the battery running time for laptops because the CPU can stay in power-saving mode longer. In reality, the kernel is not the only factor: drivers, daemons, and applications can also spoil your power-saving strategy, making the new kernel’s contribution virtually useless.


Read full article as PDF »


Comments


Print this page. Recommend
Share
Related Articles
BETTER SLEEP Saving power with PowerTOP
ZACK'S KERNEL NEWS
Saving Power Software-based energy savings
Performance Tuning Toolbox Tools and techniques for performance tuning in Linux
FREE Live Streaming Video from ApacheCon US 2009

Watch our free Video Archive from Apachecon US 2009. Archive provided by The Apache Foundation, COLLABNET, and Linux Pro Magazine

Drawing internationally renowned thought-leaders, contributors, and organizations in the Open Source community, ApacheCon offers insight into the culture and community that develops and shepherds industry-leading Open Source projects, including Apache HTTP Server – the world's most popular Web server software for more than 10 years.

Find out more