./adb shell or terminal emulator on phone
$ su
# mount -o remount,rw /system
# echo 'kernel.sched_latency_ns = 600000' >> /etc/sysctl.conf
# echo 'kernel.sched_min_granularity_ns = 400000' >> /etc/sysctl.conf
# echo 'kernel.sched_features = 24188' >> /etc/sysctl.conf
# mount -o remount,ro /system
# sysctl -p 
(the following should print after typing previous command) 
kernel.sched_latency_ns = 600000
kernel.sched_min_granularity_ns = 400000
kernel.sched_features = 24188

# exit
$ exit