Last active
January 20, 2018 17:45
-
-
Save Hermanio/23b1f76fd45608073ed033e1f523e9bd to your computer and use it in GitHub Desktop.
Revised Python 3 script for controlling Intel CPU clock speed using P-State driver + Thinkpad basic fan control
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import time | |
RUN_CYCLE_LENGTH_IN_SECONDS = 1.0 | |
FAN_CONTROL_ENABLED = True | |
SAFE_TEMPERATURE = 75 | |
TARGET_TEMPERATURE = 90 | |
CRITICAL_TEMPERATURE = 95 | |
MIN_CLOCK_PCT = 60 | |
MAX_CLOCK_PCT = 100 | |
CURRENT_CLOCK = 100 | |
THROTTLE_CRITICAL = -5 | |
THROTTLE_MODERATE = -1 | |
INCREASE_MODERATE = 1 | |
INCREASE_BOOST = 5 | |
NO_TURBO_STATE_FILE = "/sys/devices/system/cpu/intel_pstate/no_turbo" | |
MAX_CLOCK_PCT_FILE = "/sys/devices/system/cpu/intel_pstate/max_perf_pct" | |
PACKAGE_TEMPERATURE_FILE = "/sys/class/hwmon/hwmon2/temp1_input" | |
IBM_FAN_FILE = "/proc/acpi/ibm/fan" | |
def get_package_temp(): | |
with open(PACKAGE_TEMPERATURE_FILE, 'r') as f: | |
return int(f.readline()) / 1000 | |
def get_clock_percentage_diff(current_temperature): | |
if current_temperature > CRITICAL_TEMPERATURE: | |
temperature_difference = THROTTLE_CRITICAL | |
elif current_temperature > TARGET_TEMPERATURE: | |
temperature_difference = THROTTLE_MODERATE | |
elif current_temperature > SAFE_TEMPERATURE: | |
temperature_difference = INCREASE_MODERATE | |
else: | |
temperature_difference = INCREASE_BOOST | |
return temperature_difference | |
def apply_cpu_clock(current_temperature): | |
global CURRENT_CLOCK | |
CURRENT_CLOCK = CURRENT_CLOCK + get_clock_percentage_diff(current_temperature) | |
if CURRENT_CLOCK < MIN_CLOCK_PCT: | |
CURRENT_CLOCK = MIN_CLOCK_PCT | |
elif CURRENT_CLOCK > MAX_CLOCK_PCT: | |
CURRENT_CLOCK = MAX_CLOCK_PCT | |
write_clock_speed_to_file(CURRENT_CLOCK) | |
def write_clock_speed_to_file(clock_pct): | |
with open(MAX_CLOCK_PCT_FILE, 'w') as f: | |
f.write(str(clock_pct)) | |
def apply_fan_speed(current_temperature): | |
if current_temperature > TARGET_TEMPERATURE - 5: | |
level = 64 # unhinged mode, absolute max speed available | |
elif current_temperature > TARGET_TEMPERATURE - 10: | |
level = 7 # default max speed | |
else: | |
level = "auto" # bios controlled speed | |
write_fan_speed_to_file(level) | |
def write_fan_speed_to_file(fan_speed_level): | |
with open(IBM_FAN_FILE, 'wb') as f: | |
f.write(str.encode("level " + str(fan_speed_level) + "\n")) | |
def adjust_clock_speed(): | |
turbo_state_enabled = int(open(NO_TURBO_STATE_FILE, "r").read(1)) == 0 | |
current_temperature = get_package_temp() | |
if turbo_state_enabled: | |
apply_cpu_clock(current_temperature) | |
if FAN_CONTROL_ENABLED: | |
apply_fan_speed(current_temperature) | |
def start_thermal_daemon(): | |
start_time = time.time() | |
while True: | |
adjust_clock_speed() | |
time.sleep(RUN_CYCLE_LENGTH_IN_SECONDS - ((time.time() - start_time) % RUN_CYCLE_LENGTH_IN_SECONDS)) | |
if __name__ == '__main__': | |
start_thermal_daemon() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment