53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
#!/usr/bin/python3
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# Copyright (C) 2018 spdf
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#
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# This file is part of Elektron.
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#
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# Elektron is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Elektron is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Elektron. If not, see <http://www.gnu.org/licenses/>.
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#
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import sys
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import os
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import math
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def main():
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POWER_CAP_DIR = "/sys/class/powercap/"
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if not len(sys.argv) == 2:
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print(sys.argv[0] + " <throttle percent>")
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exit(-1)
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if not os.path.exists(POWER_CAP_DIR):
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print("Powercap framework not installed exist")
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exit(-1)
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throttle_percent = float(sys.argv[1])/100.0
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if throttle_percent > 1.0 or throttle_percent < 0:
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print("Percent must be between 0 and 100")
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exit(-1)
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# print(throttle_percent)
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for directory in os.listdir(POWER_CAP_DIR):
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if len(directory.split(':')) == 2:
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max_watts = open(POWER_CAP_DIR + directory + '/constraint_0_max_power_uw', 'r')
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rapl_cap_watts = open(POWER_CAP_DIR + directory + '/constraint_0_power_limit_uw', 'w') #0=longer window, 1=shorter window
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rapl_cap_watts.write(str(math.ceil(float(max_watts.read())*throttle_percent)))
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main()
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