# Cpu Performance Mode (B)

+ Can be turned on by the Performance module in the host's BIOS
  + Adjust the CPU mode after each server starts
    + Verify CPU mode
    + Adjust CPU mode
+ The configuration loses its effect after restart the server. If you need to persist the configuration, you can set the autorun command, or you can do so by modifying the BIOS configuration

```12
$ for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
        [ -f $CPUFREQ ] || continue
        echo -n performance > $CPUFREQ
done

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
```

------------------------------------------------------------