[SCRIPT] Enable Ram Swap & Create a Swap File with |=~>SwapItOn

It will do two things: (1) it will create a swap file in /sdcard that is a size specified by the user; and (2) it will create an init.d script that enables ram swap and sets the swappiness level to a user specified value during each boot process.

• root access

• init.d support (if you don’t have it search XDA there are a of couple of apps and numerous scripts that add this feature)

• a kernel capable of swap (to check if swap is supported in terminal enter
  Code:

  ---

  cat /proc/cpuinfo

  ---

  and under ‘features’ you should see ‘swp’ or ‘swap’)

• storage named “/mnt/sdcard” as opposed to /sdcard0 or something else

• note: one of the benefits of the method deployed by this script is that it does NOT require a special partition

Although this script works as it should on my device I am not responsible for bootloops, bricks, bad big booty b*tches, or the imminently impending zombie apocalypse. Furthermore, please perform due diligence and do some research about the costs and benefits of ram swap before using this script. In addition, please use good practice and make a nandroid backup before making any changes to your system.

Option 1 - Make a nandroid backup. Download the attached “swapit_[NOT_FLASHABLE]_v2” zip, extract it wherever you want it, and run the script with root/superuser permission in ScriptManager or a similar app, although I have found other apps lacking/deficient. Read the script’s output/follow the script’s instructions, reboot, and you’ll be good to go.

Option 2 - Make a nandroid backup. Download the attached “Defiant07s_SwapItOn_v2” zip and install it via cwm, reboot, and in a terminal emulator input or . Read the script’s output/follow the script’s instructions, reboot, and you’ll be good to go.

Uninstall - First in terminal enter . Now you can delete the “swapfile” and “swappinessvalue” files located in /sdcard as well as the “Z99SwapOn” script located in /etc/init.d and the “swapit” script located wherever you put it or in /system/xbin if you flashed it.

Unlike apps there is no ram and cpu usage - it applies your settings during the boot process…basically all you need to do set it up once and then you can forget about it. Unlike all the similar scripts I’ve looked at this script takes user input for the swapfile size and swappiness value - the others use predefined sizes and values, which imo is silly since preferences and needs vary from user to user and from device to device. In addition, unlike many similar apps and scripts there is NO need for a special partition.

The most likely cause of this is a conflicting init.d script. The solution is to search your other init.d scripts for “swappiness” and edit value accordingly.

I personally am a user of V6 SuperCharger (<<best script ever imo) and I found that when running this script at lower priority two things would happen: (1) minfree and adj values did not stick; and (2) logging was totally jacked up. This may not happen on your device so feel free experiment with renaming the init.d script so as to adjust its priority. Note: should you rename it and then later rerun the main “swapit” script to change your settings, upon completion you should delete the new “Z99SwapOn” script located in /etc/init.d [do not worry your new settings will still be applied by the old script] otherwise you will have duplicate scripts.

v2 - forgot a few "\", which caused minor bugs in the Ran_SwapOn.log file created by the init.d script and would cause the user's new swappiness level setting to not be applied if they renamed the old init.d script and deleted the newly created "Z99SwapOn" script following rerunning the "swapit" script