This mod is a port of the Memory Cleaner Mod for both newer and older versions. The original mod is made by TCreopargh.
To use the current only feature of this mod, use the /cleanmemory command, which runs System.gc() and cleans unused RAM.
There may be lag spikes while this command is running.
Please read the description of Memory Cleaner Mod for more details: https://www.curseforge.com/minecraft/mc-mods/memory-cleaner-mod
NOTE: This mod is still missing two important features of the original Memory Cleaner Mod, which are automatic memory cleaning and configuration.