I made it with drawpixels native extensions
It's a on screen texture attached to the camera

Renderscript draw line are good, but less performance when need draw a lot of lines

Yea, like it so much too!

Visualization implemented with drawpixels and widgets with the Druid

There are two lines with time and memory pairs after the system id

The upper bars is for system update function
The down is for post-step where I do all system connections.

So basically each graph-line can direct you almost instantly in range of 100 code lines to check the problem 🤔