Memory spike before dealloc

Question

I'm going through my code fixing retain cycles. I just finished this on one view controller and now dealloc is getting called again (I just have a log in it to check). Watching the memory graphic though I can see a huge spike after I dismiss the controller and just before dealloc is called. Is this normal behaviour?

The spike occurs about 2 seconds after the view has dismissed and the dealloc log I print appears just after the spike peaks.

- (void)dealloc {
   NSLog(@"DEALLOC SEND");
}

Answer 1

内存高峰实际上是由我返回的视图控制器引起的，而不是被释放的视图控制器引起的。