> I have found that the Windows 32bit DLL works slower on a 64bit machine > than on a 32bit. I would have thought that the calls from the > applications would have the same response for both machines since the > application is a 32 bit application. Anyone thinks otherwise? Thanks.
I presume you mean that running 32-bit application on a 64-bit OS is slower than the same application run on a 32-bit OS. Generally speaking this is not the case unless you are spending a significant portion of the execution time in non-optimized thunking code, which only exists when transitioning between "user" mode (32-bit) and "supervisor" mode (64-bit). What in particular is slower? And what versions of Windows are you comparing?
