Testing Radeon DPM Using Sysfs/Debugfs
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For those looking to test out the long-awaited Radeon dynamic power management support within the Linux 3.11 kernel, here's some information on the new debugfs and sysfs interfaces for dealing with this "DPM" feature. The Radeon updates for the Linux 3.11 kernel are very exciting as the GPU clock speeds and voltages can dynamically adjust based upon load. This leads to power-savings when idling, especially for battery-backed systems, and also to greater performance on newer hardware by being able to up-clock the GPU from its boot speeds.
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