Hi
I had a problem with frequency scaling with my fileserver
dmesg shows me:
ondemand governor failed, too long transition latency of HW, fallback to performance governor
so i’d coded my own scaling script )
#!/bin/bash loadavg=$(cat /proc/loadavg | awk '{print $1}') thisloadavg=$(echo $loadavg | awk -F . '{print $1}') cpufreq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed) maxfreq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) minfreq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq) governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor) if [ "$governor" != "userspace" ]; then echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor fi if [ "$cpufreq" -eq "$minfreq" ]; then if [ "$thisloadavg" -ge "2" ]; then echo $maxfreq > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed fi fi if [ "$cpufreq" -eq "$maxfreq" ]; then if [ "$thisloadavg" -le "1" ]; then echo $minfreq > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed fi fi
SImply add it to crontab
Have Fun!