Windows 8 Store App - Memory footprint too high

Question

I am building a WinJS Windows 8 Store App, and im having problems with keeping the "Memory Footprint" low, as currently it fails the "Performance Analyzer for HTML5 Apps":

Memory Footprint

Apps run better when they use a small amount of memory. An app should have a memory footprint of less than 60MB. To reduce your app's memory footprint, avoid keeping references to objects, such as images or blobs, that are no longer needed.

RESULT: app reference set is 112MB; working set is 98MB. This exceeds the 80MB reference set maximum and 80MB working set maximum failure threshold.

I looking for any tips on how to deal with this, and i don't see where this 112MB comes from, looking in the Task Manager, my app never exceeds more then ~50MB.

Thanks!

If you need anymore info just ask, not sure what to provide.

Answer 1

My small app C#/XAML is already taking ~100 MB, seems that the underlying sandbox/CLR is responsible for most of this. Good thing that Metro apps have agressive memory managment from the OS, as soons as they're out of sight they're suspended and partially removed from memory.

Update: It seems MS documentation was right, by cleaning the datasets (lists of objects and strings, mostly), the memory use drops drastically. I went from 120 MB to 30 MB, much more manageable and with room to breath.