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How To Reduce Linux Computer Power Consumption

The Advanced Configuration and Power Interface (ACPI) specification is an open standard operating system-centic device configuration and power management. You can easily reduce your PC's power consumption through smart activity monitors. You can monitor application usage, system attributes, and user activity to more effectively use the power-management systems of your laptop or desktop computer.

Advanced Configuration and Power Interface (ACPI) and the power configuration systems built into modern computers provide a wide range of options for reducing overall power consumption. Linux and its associated user space programs have many of the tools necessary to master your PC power consumption in a variety of contexts. Much of the current documentation focuses on modifying your kernel parameters and hdparm settings to reduce unnecessary disk activity. In addition, extensive documentation is available for changing your processor settings to maximize the benefits of dynamic frequency scaling based on your current power source.

This article provides tools and code to build on these power-saving measures by monitoring your application-usage patterns. Use the techniques presented here to change your power settings based on the application in focus, user activity, and general system performance.

Linux Data Center Power Consumption Less Than Windows

According to new independent tests Red Hat Linux pulls as much as 12% less power than Windows 2008 on identical hardware. It means Linux is better for reducing data center power consumption or electrical power consumption. From the report:

Our tests point to Linux as the winner of the green flag by margins that topped out at 12%. We ran multiple power consumption tests using Windows Server 2008 Enterprise Edition, Red Hat's Enterprise Linux (RHEL) 5.1 and SUSE Enterprise Linux 10 SP1 on four, popular 1U server machines, one each from Dell and IBM and two from HP. The results showed that while Windows Server 2008 drew slightly less power in a few test cases when it had its maximum power saving settings turned on, it was RHEL that did the best job of keeping the power draw in check across the board.

Read full research report about computer power consumption online:

Now the million dollar question, how important is green computing / green computers to you? Would you make switch to save the power?