COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Performance is increased when execution time is decreased
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Performance is increased when execution time is increased
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Performance is decreased when execution time is decreased
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None
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Detailed explanation-1: -The execution time of an instruction depends in part on the behavior of other instructions in the pipeline. Two instructions that compete for the same resource will execute more slowly when executed together than if they were executed at widely separated times. The memory system is an even larger source of variation.
Detailed explanation-2: -The execution time or CPU time, which we call Ci, is the total amount of time that the process executes; that time is generally independent of the initiation time but often depends on the input data.
Detailed explanation-3: -The clock speed measures the number of cycles your CPU executes per second, measured in GHz (gigahertz).
Detailed explanation-4: -The execution time or CPU time of a given task is defined as the time spent by the system executing that task, including the time spent executing run-time or system services on its behalf. The mechanism used to measure execution time is implementation defined.