A profiler should provide what you are looking for, take your pick from the list below:
- Visual Studio 2012 Professional, Premium and Ultimate include a memory and diagnostic profiler - free, depending upon if you have the correct version already
- SpeedTrace Pro - costs money, but has a free trial
- ANTS Performance Profiler - costs money, but has a free trial
- Telerik JustTrace - costs money, but has a free trial