#!/bin/bash

date=$(date --utc +%s%N)

for cpu in $(cat /sys/devices/system/cpu/cpu0/cpufreq/affected_cpus)
do
  echo "cpu_frequency,cpu=$cpu mhz=$(expr $(cat /sys/devices/system/cpu/cpu$cpu/cpufreq/scaling_cur_freq) / 1000) $date"
done