X86 firmware cannot set cpu to high performance

For Developers
1

download：
https://downloads.openwrt.org/snapshots/targets/x86/64/openwrt-x86-64-generic-ext4-combined-efi.img.gz

My device is: BESSTAR TECH LIMITED GK41
cpu: Intel(R) Celeron(R) J4125 CPU @ 2.00GHz

echo "performance"> /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

root@OpenWrt:~# cat /proc/cpuinfo |grep MHz|uniq
cpu MHz : 646.494
cpu MHz : 511.184
cpu MHz : 636.304
cpu MHz : 533.139

I have tried many methods. Setting the cpu to the performance mode is invalid, but it works under ubuntu windows, but it is invalid under openwrt.
My purpose is to keep the cpu in high-performance mode. I don't want to save energy, so the performance will be poor.

2

Try setting up performance mode for each CPU.

echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
3

It didn't work, tried it,