问题
I have created an app on iOS 6 in which I am showing the Map. The problem is there is a highly increase in memory allocation in just a simple interaction with the map i.e., on Pinch and Pan and dragging operations. I thought there may be some enhancements in the Mapkit in iOS 6 which I don't know so I tried the Sample Code of Raywenderlich but still I am facing the same issue. Please take a look on the image I have attached. I just dragged the map for sometime and there is an allocation of 55MB. I have tested this on Simulator but on the Device, app crashes very soon. Please provide some help in any way in this regard!

回答1:
From what it appears, this issue seem to only affect iOS 6 maps when dragging and zooming. There have been various hot fixes that have been proposed to address this issue. However, it appears that this is a bug that will need to be addressed by Apple.
There have been solutions proposed in this question: iOS6 MKMapView using a ton of memory, to the point of crashing the app, anyone else notice this?
Edit: Some additional questions on stackoverflow claiming this issue.
- Guide to acceptable "Live Bytes" of iOS6 app using MKMapView
- MKMapView memory usage steadily increasing
- Memory usage of MKMapView is very high
来源:https://stackoverflow.com/questions/14280106/how-to-resolve-the-memory-issue-with-map-on-ios-6