瑞芯微RK3399處理器的GPU和CPU效能方法參考

瑞芯微RK3399處理器的GPU和CPU效能方法參考：

為了VS-RK3399達到最好的效能，需要將CPU 及GPU 定頻，特別是GPU。

CPU 定頻方法參考：

cat /sys/devices/system/cpu/cpu4/cpufreq/scaling_available_frequencies

echo "userspace" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

echo "1416000" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

echo "userspace" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor

echo "1416000" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_setspeed

echo "userspace" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor

echo "1416000" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_setspeed

echo "userspace" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor

echo "1416000" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_setspeed

echo "userspace" > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor

echo "1800000" > /sys/devices/system/cpu/cpu4/cpufreq/scaling_setspeed

echo "userspace" > /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor

echo "1800000" > /sys/devices/system/cpu/cpu5/cpufreq/scaling_setspeed

GPU 定頻方法參考：

echo "userspace" >/sys/devices/platform/ff9a0000.gpu/devfreq/ff9a0000.gpu/governor

echo "800000000" >/sys/devices/platform/ff9a0000.gpu/devfreq/ff9a0000.gpu/userspace/set_freq

cat /sys/devices/platform/ff9a0000.gpu/devfreq/ff9a0000.gpu/cur_freq

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RK3399平臺資料：

RK3399是瑞芯微推出的一款低功耗、高效能的應用處理器晶片，該晶片基於Big.Little架構,即具有獨立的NEON協同處理器的雙核Cortex-A72及四核Cortex-A53組合架構，主要應用於計算機、個人網際網路移動裝置、VR、廣告機等智慧終端裝置。RK3399內建多個高效能硬體處理引擎，能夠支援多種格式的影片解碼，如：4K*2K@60fps 的H.264/H.265/VP9，也支援1080P@30fps的H.264/MVC/VP8 以及高質量的JPEG編解碼和影像的前後處理器。