Below are some tips and tricks for the Tizen platform OS, version 2.3 (should work on all versions up, including 3.0).

Battery info

Get info about current battery capacity (charging level):

# cat /sys/class/power_supply/battery/capacity
100

The battery capacity should be between 1 and 100, min and max. You can find out all kind of information about the battery in your device, by cat-ing the files inside the /sys/class/power_supply/battery/ directory. For example:

# cat /sys/class/power_supply/battery/status
Full

CPU governor

# echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

Or, if you want to preserve battery live at the expense of the performance, use this:

# echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

To find out the current governor CPU state, use:

# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

Format SD card

First, remove the initial vfat partition and create an ext3 one instead.

# parted /dev/mmcblk1 rm 1
# parted -a optimal /dev/mmcblk1 mkpart primary ext3 0% 100%
# mkfs.ext3 /dev/mmcblk1p1