36 lines
921 B
Python
36 lines
921 B
Python
|
#!/usr/bin/python3
|
||
|
|
import sys
|
||
|
|
import os
|
||
|
|
import math
|
||
|
|
|
||
|
|
def main():
|
||
|
|
POWER_CAP_DIR = "/sys/class/powercap/"
|
||
|
|
|
||
|
|
if not len(sys.argv) == 2:
|
||
|
|
print(sys.argv[0] + " <throttle percent>")
|
||
|
|
exit(-1)
|
||
|
|
|
||
|
|
if not os.path.exists(POWER_CAP_DIR):
|
||
|
|
print("Powercap framework not installed exist")
|
||
|
|
exit(-1)
|
||
|
|
|
||
|
|
throttle_percent = float(sys.argv[1])/100.0
|
||
|
|
|
||
|
|
if throttle_percent > 1.0 or throttle_percent < 0:
|
||
|
|
print("Percent must be between 0 and 100")
|
||
|
|
exit(-1)
|
||
|
|
|
||
|
|
# print(throttle_percent)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
for directory in os.listdir(POWER_CAP_DIR):
|
||
|
|
if len(directory.split(':')) == 2:
|
||
|
|
max_watts = open(POWER_CAP_DIR + directory + '/constraint_0_max_power_uw', 'r')
|
||
|
|
rapl_cap_watts = open(POWER_CAP_DIR + directory + '/constraint_0_power_limit_uw', 'w') #0=longer window, 1=shorter window
|
||
|
|
|
||
|
|
rapl_cap_watts.write(str(math.ceil(float(max_watts.read())*throttle_percent)))
|
||
|
|
|
||
|
|
|
||
|
|
main()
|