#!/bin/sh -e
#
# rc.local
#


if [ -e "/sys/block/sda/queue/iosched/fifo_batch" ]; then
    echo 0 > /sys/block/sda/queue/rotational;
    echo 12 > /sys/block/sda/queue/iosched/fifo_batch;
    echo 0 > /sys/block/sda/queue/iosched/front_merges;
    echo "Deadline I/O Scheduler detected and optimized"
fi

if [ -e "/sys/block/sda/queue/iosched/back_seek_penalty" ]; then
    echo 0 > /sys/block/sda/queue/iosched/back_seek_penalty;
    echo "xFQ I/O Scheduler detected and optimized";
fi

if [ -e "/sys/block/sr0/queue/iosched/back_seek_penalty" ]; then
    echo cfq > /sys/block/sr0/queue/scheduler;
    echo 4 > /sys/block/sr0/queue/iosched/back_seek_penalty;
    echo "Optical Disc Drive optimized";
fi

# aspm
echo powersave > /sys/module/pcie_aspm/parameters/policy

# disable nmi
#echo 0 > /proc/sys/kernel/nmi_watchdog

# BUS powersave
for i in /sys/bus/pci/devices/*/power/control; do echo auto > $i; done
for i in /sys/bus/i2c/devices/*/power/control; do echo auto > $i; done

# USB powersave
for i in /sys/bus/usb/devices/*/power/autosuspend; do echo 1 > $i; done
for i in /sys/bus/usb/devices/*/power/control; do echo auto > $i; done

# Sound card powersave
echo 1 > /sys/module/snd_hda_intel/parameters/power_save
echo Y > /sys/module/snd_hda_intel/parameters/power_save_controller

# NET powersave
ethtool -s eth0 wol d

# Screen powersave
#for i in /sys/class/backlight/acpi_video*/brightness; do echo 2 > $i; done

#set SATA link power managment
for i in /sys/class/scsi_host/host*/link_power_management_policy; do echo min_power >  $i; done

# cpufreq tuning
echo conservative | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
echo 40000 > /sys/devices/system/cpu/cpufreq/conservative/sampling_rate
echo 1 > /sys/devices/system/cpu/cpufreq/conservative/ignore_nice_load
echo -n 40 > /sys/devices/system/cpu/cpufreq/conservative/down_threshold
echo -n 80 > /sys/devices/system/cpu/cpufreq/conservative/up_threshold

# BFS 4 Dualcore
echo 5 > /proc/sys/kernel/rr_interval

# multi core power saving
echo 2 > /sys/devices/system/cpu/sched_mc_power_savings

exit 0