freqd

#!/bin/bash

# Change these values according to your system #

# Usable scaling speeds
FREQUENCY[0]=1000000
FREQUENCY[1]=1333000
FREQUENCY[2]=1667000
FREQUENCY[3]=2000000

# current temperature
TEMP_INPUT_SRC="/sys/class/hwmon/hwmon0/temp2_input"
# critical temperature
TEMP_CRITICAL_SRC="/sys/class/hwmon/hwmon0/temp2_crit"

# DO NOT MODIFY BELOW THIS LINE #

trap ctrl_c INT

function ctrl_c() {
    echo -e "\rSwitching to powersave governor"
    xenpm set-scaling-governor powersave
    xenpm set-scaling-minfreq "${FREQUENCY[0]}"
    xenpm set-scaling-maxfreq "${FREQUENCY[3]}"
    echo "Exiting"
    exit
}

function setfreq {
    LAST_FREQUENCY=$CURRENT_FREQUENCY

    echo -n " => Setting frequency to ${FREQUENCY[$NEXT_FREQUENCY]}"
    xenpm set-scaling-speed "${FREQUENCY[$NEXT_FREQUENCY]}"

    CURRENT_FREQUENCY=$NEXT_FREQUENCY
    LAST_CHANGE=$(date +%s)
}

LAST_FREQUENCY=0
CURRENT_FREQUENCY=0
LAST_CHANGE=0

xenpm set-scaling-governor userspace
xenpm set-scaling-minfreq "${FREQUENCY[0]}"
xenpm set-scaling-maxfreq "${FREQUENCY[3]}"

while true
do
    TEMP_INPUT=$(cat $TEMP_INPUT_SRC)
    TEMP_CRITICAL=$(cat $TEMP_CRITICAL_SRC)
    CURRENT_TIME=$(date +'%Y-%m-%d %H:%M:%S')
    CURRENT_TIMESTAMP=$(date +%s)
    TIME_DIFF=$(( $CURRENT_TIMESTAMP - $LAST_CHANGE ))

    CURRENT_SPEED=$(xenpm get-cpufreq-para | grep scaling_setspeed | cut -d ' ' -f 7 | uniq)
    CURRENT_SPEED=$(printf "%d.%02d" $(( $CURRENT_SPEED / 1000000 )) $(( ( $CURRENT_SPEED / 1000 - $CURRENT_SPEED / 1000000 * 1000 ) / 10 )) )
    PERCENT=$(( $TEMP_INPUT * 100 / $TEMP_CRITICAL ))

    echo -n "${CURRENT_TIME} Clock speed: ${CURRENT_SPEED}GHz, Temperature: ${PERCENT}%"

    if [ $PERCENT -ge 95 ]
    then
        if [ $CURRENT_FREQUENCY -ne 0 ]
        then
            echo -n " >= 95%"
            NEXT_FREQUENCY=$(( $CURRENT_FREQUENCY - 1 ))
            setfreq $NEXT_FREQUENCY
        else
            echo " Panic!!!"
            echo 1 > /proc/acpi/ibm/beep
        fi
    elif [ $PERCENT -ge 90 ]
    then
        if [ $CURRENT_FREQUENCY -lt 1 ] && [ $TIME_DIFF -ge 30 ]
        then
            echo -n " >= 90%"
            NEXT_FREQUENCY=$(( $CURRENT_FREQUENCY + 1 ))
            setfreq $NEXT_FREQUENCY
        fi
    elif [ $PERCENT -ge 85 ]
    then
        if [ $CURRENT_FREQUENCY -lt 2 ] && [ $TIME_DIFF -ge 20 ]
        then
            echo -n " >= 85%"
            NEXT_FREQUENCY=$(( $CURRENT_FREQUENCY + 1 ))
            setfreq $NEXT_FREQUENCY
        fi
    else
        if [ $CURRENT_FREQUENCY -lt 3 ] && [ $TIME_DIFF -ge 10 ]
        then
            echo -n " < 85%"
            NEXT_FREQUENCY=$(( $CURRENT_FREQUENCY + 1 ))
            setfreq $NEXT_FREQUENCY
        fi
    fi

    echo ""
    sleep 1
done