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An embedded application running on an ARM processor is not meeting its expected performance target.

An embedded application running on an ARM processor is not meeting its expected performance target. The target hardware on which the application is running allows the frequency of the CPU to be increased independently from the memory system.

The CPU frequency is increased from 800 MHz to 1 GHz and experiments verify that the application performance does not increase.

Which one of the following statements MUST BE TRUE?

A.

The performance is limited by something other than the CPU

B.

The cache hit rate has gone down

C.

The measurement methodology is flawed and the experiment needs to be repeated

D.

The operating system is performing more context switches

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