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Alex Rivera
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We have an ASP.NET application, built around MonoRail and NHibernate, and I have noticed a strange behavior between if running it with 64-bit mode or 32-bit mode. Everything is compiled as AnyCPU, and runs fine with both modes, but the memory usage differs dramatically. Look at the following snapshots from ANTS: 32bit_snapshot: vs 64bit_snapshot: The usage scenario for both snapshots are pretty much equivalent (I have hit the same pages on both runs). Firstly, why is the Unused memory so high in 64-bit mode? And why would unmanaged memory be 4 times the size on 64-bit mode? Any insight on this would be really helpful.
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