QCPUFreq

QCPUFreq is a GUI for the kernel's cpufreq interface. It allows you to adjust your CPU's maximum speed.
This prevents the CPU from working at full speed when you don't need it (e.g when running emulators) which enables you to save more battery power.

It should work with vanilla and custom kernels so both normal users and overclockers could benefit from the application.

If you are using a power kernel you can also use QCPUFreq for overclocking!

Maintainer wanted

Requirements:

• N900 with at least PR 1.2
• no dependencies

Features:

• finger-friendly UI
• completely "optified"
• portrait mode support (kinda useless, but hey: "portrait mode on the N900" )
• support for overclocking and underclocking
• support for saving current settings as default (only on power kernel)
• support for loading voltage presets (only on power kernel, extras-devel version)

When you can expect to save power:

• Running games/emulators which cause your CPU to run at full speed when it is really not required
• SmartReflex should save a little power in all cases

Known limitations:

• Maximum frequency reverts to default after:
  • rebooting the device
  • making or recieving a call
• Settings are lost after reboot - this is intentional so users do not screw up their device. If you are using a power kernel you can however save your settings in the QCPUFreq menu.
• On vanilla kernels the temperature may be inaccurate
• Setting the frequency to the lowest value (250 MHz on vanilla kernel) causes the scaling governor to scale up to the second scaling step (500 MHz on vanilla kernel).
• Sometimes the CPU frequency jumps above the maximum frequency defined in QCPUFreq. The scaling governor will eventuelly notice it (after ~1 sec.) and lower the frequency again. This is a kernel issue and QCPUFreq does not have any influence on this behavior.

I'd appreciate any user input

Screenshot:




Download:
Get QCPUFreq from extras-testing.