Linux
apt-get install cpufreqd cpufrequtils
cpufreq-set -g ondemand
/dev/hda1 / ext3 errors=remount-ro,noatime,data=writeback 0 1
linux /boot/vmlinuz-2.6.x root=UUID=1234-5-hoge ro rootflags=data=writeback
tune2fs -o journal_data_writeback /dev/hda1
echo linux-image-3.16.0-70-lowlatency hold | dpkg --set-selections
dpkg --get-selections | grep xxx