CS312-CH4 - Chapter 4 Performance Click to edit Master...

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Click to edit Master subtitle style 8/27/09 Chapter 4 Performance
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8/27/09 22 Introduction Why bother with performance? H/W performance has an overall impact on the entire system. How do we measure performance? Depends how you define performance. So, what is performance?
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8/27/09 ch2-The Role of Performance.ppt Throughput and Response Time Response time ≠ Throughput Scenario Response Time S Throughput S Both Replacing the processor in a computer with a faster version. S S S S Adding additional processors to a system that uses multiple processors for separate tasks.
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8/27/09 ch2-The Role of Performance.ppt Performance vs Execution Time To maximize performance, must minimize execution time What does "X is n times faster than Y" mean?
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Example If machine A runs a program in 10 seconds and machine B runs the same program in 15 seconds, how much faster is A than B? A: A is 1.5 times faster than B
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This note was uploaded on 08/26/2009 for the course CS 312 taught by Professor Tornaritis,s during the Spring '08 term at Southern Illinois University Edwardsville.

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CS312-CH4 - Chapter 4 Performance Click to edit Master...

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