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Lab 5 Introduction

In this lab, I will investigate the impact of different algorithms which produce the same effect. I will test and select one of three algorithms for adjusting the volume of PCM audio samples based on benchmarking.


We are given a pre coded program which fills an array with a predetermined size of (500,000) which we can adjust to make faster or slower. It fills the first array with random numbers , and the second array is calculated by going through each element in the first array and multiplying the value of the first array by 0.75.


Depending on which version we will be using the algorithm to reach the goal above might be different.


We will be using various tools to profile these programs. A profiler, profiling is the process of determining how a program is using the resources that it is consuming.


We can potentially use up to 4 profilers in this lab.

  • gprof

  • perf

  • oprofile

  • SystemTap

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