TIP: setting CPU to performance mode

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A cheap/dirty little hack to increase idle CPU frequency and increase performance in general (don't blame me when your battery runs dry in about 3 hours):

(must have root first!)

cat /proc/cpuinfo (use this to see cpu speed, you will see at idle its 162.54mhz)

adb shell
echo "performance" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

cat /proc/cpuinfo (now idling at 662.40mhz!)

If you want to switch back:

adb shell
echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

nice job. I would have to say probably for the first time ever... i dont think i need to mess with the processor speed on this phone :P Who knows how long it will be untill i change that.


I am also all about battery life. I did have the huge battery pack on my old G1

Id be affraid to tweak this things speed.

Is there a possibility that it could crash from being to fast?

Just curious

Yeah the only thing I miss about my g1 is the extended battery.

Originally Posted by Freezey

Id be affraid to tweak this things speed.

Is there a possibility that it could crash from being to fast?

Just curious

no, but it can crash from overheating. and based on how fast this chip is compared to how thin this phone is, It may be possible for the chip to overheat on a hot day.

Protip: SetCPU (download link in my sig) can switch you between governors without the need for using the shell.

By the way, bogomips in /proc/cpuinfo is not 1:1 with MHz on the Scorpion.

It is literally too snappy to set the cpu. No need to bother. (Though I do appriciate the help)

However, the need to root still exists for tethering.

So setcpu will work for this already?

Originally Posted by Sashin

So setcpu will work for this already?

Yes. 10char

hmm its interesting to note that by default idle CPU speed is ~160mhz. I think the battery would not last 4 hours on or sleep mode if the CPU was constantly at 1Ghz.