Lua Memory Usage on function calls

[Dero]

Hey Guys,

i made a little Addon to analyze the Memory usage of Lua.
While playing around a little bit with it, i noticed, that every function call consumes a bit of Memory wich isnt get freed after function ended. e.g.

ESO_MU.Collect()

Am i doing something wrong, or is it just Lua, wich isn't collecting the garbage in a proper time?

functions:
/mu start [time in ms] -- starts the memory display (default 500 ms)
/mu stop -- hides the memory display and stops at next interval
/mu collect -- collects the garbage and displays the freed memory in Chat

Here is the Memory Usage Addon if someone wants to check: MemoryUsage.zip