What will the reader do while polling? If they will spin/poll, that will consume CPU resource unnecessarily. If the reader does it frequently the OS will preempt the process and pay the price.
Typically, it takes around 50ns to 80ns to access RAM via north bridge. Most probably the CPU cache is screwing his measurements.
Typically, it takes around 50ns to 80ns to access RAM via north bridge. Most probably the CPU cache is screwing his measurements.