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查看CPU是几核
cat /proc/cpuinfo | grep ^processor | wc -l
8
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查看CPU有几个核在运行
cat /sys/devices/system/cpu/online
0-1,4-7
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查看系统支持多少个核:
cat /sys/devices/system/cpu/present
0-7
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开启某个CPU核
echo 1 > /sys/devices/system/cpu/cpu#/online
注: #为数字，标识哪个CPU核，如八核CPU, 则＃取值为０～７
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查看CPU核的运行频率
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
960000
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查看CPU核动态调频的Governor
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
interactive
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查看当前CPU核的温度
cat /sys/class/thermal/thermal_zone9/temp
42000 42或者42000，代表约42度等 注: SoC系统往往有多个thermal sensor, 需要分辨监测CPU核温度的是哪些sensor，Qualcomm平台可参考/system/etc/thermal-engine.conf文件．
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查看CPU类型
cat /sys/class/thermal/thermal_zone7/type mtktscpu注: MTK的CPU名称类似为mtktscpu，Qualcomm的CPU名称类似为tsens_tz_sensor
