❯ sudo dmesg | grep microcode
[ 0.022227] [Firmware Bug]: TSC_DEADLINE disabled due to Errata; please update microcode to version: 0x22 (or later)
[ 0.083128] SRBDS: Vulnerable: No microcode
[ 0.391444] microcode: Current revision: 0x00000007

~
❯ cat /sys/devices/system/cpu/intel_pstate/status
cat /sys/devices/system/cpu/intel_pstate/no_turbo

active
0

~
❯ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors

powersave
performance powersave

~
❯ cpupower frequency-info

analyzing CPU 3:
driver: intel_pstate
CPUs which run at the same hardware frequency: 3
CPUs which need to have their frequency coordinated by software: 3
maximum transition latency: Cannot determine or is not supported.
hardware limits: 800 MHz - 3.50 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 800 MHz and 3.50 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency: 2.00 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes

~
❯ sudo rdmsr -a 0x1a0
850089
850089
850089
850089

~
❯ sudo rdmsr -a 0x199
1f00
1400
1700
2300

~
❯ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver

intel_pstate

~
❯ grep GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT='nowatchdog nvme_load=YES zswap.enabled=0 splash loglevel=3 intel_pstate=active nowatchdog idle=halt processor.max_cstate=1 mitigations=off'