Created
November 23, 2022 18:21
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#!/usr/bin/env bash | |
# | |
# Bash script to sample Intel RAPL inteface and save numbers to a file. | |
# This script will run until manually interrupted. | |
# | |
# The CPU_POWER_OUTPUT_FILE environment variable must be set before | |
# running this script. | |
# Make sure CPU_POWER_OUTPUT_FILE variable is defined | |
set -u | |
: "$CPU_POWER_OUTPUT_FILE" | |
# Sampling cadence in seconds | |
CADENCE="0.1" | |
COUNTER="/sys/class/powercap/intel-rapl/intel-rapl:0/energy_uj" | |
echo "Sampling $COUNTER" >> $CPU_POWER_OUTPUT_FILE | |
echo "Cadence = $CADENCE seconds" >> $CPU_POWER_OUTPUT_FILE | |
while /bin/true; do | |
RAPL=$(cat $COUNTER) | |
TIME=$(date --iso-8601=ns) | |
echo "$TIME, $RAPL" >> $CPU_POWER_OUTPUT_FILE | |
sleep $CADENCE | |
done |
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