These are edits made to the build.prop that I have changed to increase performance, battery life, and data speeds.
Cron is a popular time based job scheduler on Unix/Linux, and is super useful as you can virtually run any command or script periodically at certain times or dates.
---For this script I have cron erasing vm caches twice daily, at 2am and 2pm.
SD card speed increases
--increases speed of sdcard reads by reading 1024kb ahead
Edits to the sysctl.conf file in /system/etc/ These tweaks are for performance to allow device to run better.
File System Speed increases
Same as SD but for file systems
Swap(if device supports)
Swap moves inactive processes into virtual memory, allowing the device to not become laggy or slow down.