问题
Graph shows that it is used about 30 MBs of memory. However, Heap summary shows info for less than 1 MB (if looking at "retained allocations at end). What can be a reason for that, how to get the rest?
回答1:
The profiler only shows you allocations done by managed code. Unfortunately, allocations can be done by native code too (for instance, when you load a picture), and those aren't traced by the profiler. This makes tracking memory leaks especially tricky on Windows Phone.
来源：https://stackoverflow.com/questions/17341250/windows-phone-profiler-heap-summary-shows-not-a-complete-summary