The amount of labor required can be decreased using compiler optimizations, such as unrolling loops to minimize the number of branches, register allocation to decrease the number of memory accesses, and inlining to eliminate call overhead.
The total amount of time a CPU spends performing calculations is known as CPU execution time. It does not include time spent doing I/O or executing other programs. This is sometimes known as just CPU time. Since performance is inversely related to execution time, execution time determines performance.
Because CPUs control all of the computer's operating systems and programs, an improved CPU increases the system's overall run speed. Performance on a computer can be considerably enhanced by a new CPU.
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