Adb命令给 Android CPU 提频 | 收藏，用的上

在排查性能相关问题时，有时我们需要看下是否是cpu降频了之类的~，那么通过adb命令来查看和设置cpu频率就派上用场了。

设置CPU频率：

#!/bin/bash
echo "cpu 0 freq"adb shell "echo "userspace" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"adb shell "echo "1958400" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed"
echo "cpu 1 freq"　　adb shell "echo "userspace" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor"adb shell "echo "1958400" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_setspeed"
echo "cpu 2 freq"　　adb shell "echo "userspace" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor"adb shell "echo "1958400" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_setspeed"
echo "cpu 3 freq"　　adb shell "echo "userspace" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor"adb shell "echo "1958400" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_setspeed"

查看当前cpu频率：

#!/bin/bash
for ((i=0;i<3000000;i++));do        echo "\n\n========test cnt ${i}======="        echo "cpu 0 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq"
  echo "cpu 1 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq"
  echo "cpu 2 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu2/cpufreq/cpuinfo_cur_freq"
  echo "cpu 3 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu3/cpufreq/cpuinfo_cur_freq"
  echo "cpu 4 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu4/cpufreq/cpuinfo_cur_freq"
  echo "cpu 5 freq"　　  adb shell "cat /sys/devices/system/cpu/cpu5/cpufreq/cpuinfo_cur_freq"done