|
@@ -9,6 +9,7 @@
|
|
|
|
|
|
|
|
|
Dominik Brodowski <linux@brodo.de>
|
|
|
+ some additions and corrections by Nico Golde <nico@ngolde.de>
|
|
|
|
|
|
|
|
|
|
|
@@ -25,6 +26,7 @@ Contents:
|
|
|
2.1 Performance
|
|
|
2.2 Powersave
|
|
|
2.3 Userspace
|
|
|
+2.4 Ondemand
|
|
|
|
|
|
3. The Governor Interface in the CPUfreq Core
|
|
|
|
|
@@ -86,7 +88,7 @@ highest frequency within the borders of scaling_min_freq and
|
|
|
scaling_max_freq.
|
|
|
|
|
|
|
|
|
-2.1 Powersave
|
|
|
+2.2 Powersave
|
|
|
-------------
|
|
|
|
|
|
The CPUfreq governor "powersave" sets the CPU statically to the
|
|
@@ -94,7 +96,7 @@ lowest frequency within the borders of scaling_min_freq and
|
|
|
scaling_max_freq.
|
|
|
|
|
|
|
|
|
-2.2 Userspace
|
|
|
+2.3 Userspace
|
|
|
-------------
|
|
|
|
|
|
The CPUfreq governor "userspace" allows the user, or any userspace
|
|
@@ -103,6 +105,14 @@ by making a sysfs file "scaling_setspeed" available in the CPU-device
|
|
|
directory.
|
|
|
|
|
|
|
|
|
+2.4 Ondemand
|
|
|
+------------
|
|
|
+
|
|
|
+The CPUfreq govenor "ondemand" sets the CPU depending on the
|
|
|
+current usage. To do this the CPU must have the capability to
|
|
|
+switch the frequency very fast.
|
|
|
+
|
|
|
+
|
|
|
|
|
|
3. The Governor Interface in the CPUfreq Core
|
|
|
=============================================
|