THIS IS WORK AND CODE WAS CREATED BY LERG FOR CORONA SDK/ LUA USE. I DID NOT ADD ANYTHING TO THIS BUT TO UPDATE THE MODULE FOR GFX2. ALL CREDIT GOES TO LERG FOR CREATING THE ORIGINAL CODE. I HAVE GOTTEN A LOT OF MILEAGE OUT OF THIS SO I THOUGHT I'D POST IT FOR OTHERS TO USE.
To use, input the following in your main.lua file:
local performance = require('performance')
performance:newPerformanceMeter()
That's all! Now you will have the meter at the top of your screen on every scene.
Readings are in order - FPS, Texture Memory in MB, Lua Memory in kB
Tapping on the meter will trigger garbage collector - handy functionality to test memory leaks.
It also stops readings to change - if it's hard for you to read rapidly changing text.
So if you want just to trigger the garbage collector - use double tap (or double click in the sim).