// Displays run/arrival/start/end/response/turnaround time for a given number of jobs in a job set
static void JobStats(JobSet jobs, int numOutput)
{
for (int i = 0; i < numOutput; i++)
{
Console.WriteLine($"RunTime: {jobs.GetJob(i).RunTime,-5:f1} | ArrivalTime: {jobs.GetJob(i).ArrivalTime,-7:f1} | StartTime: {jobs.GetJob(i).StartTime,-7:f1} | EndTime: {jobs.GetJob(i).EndTime,-7:f1} | ResponseTime: {jobs.GetJob(i).Response,-7:f1} | TurnaroundTime: {jobs.GetJob(i).Turnaround,-7:f1}");
}
}
static void Main(string[] args)
{
Random rnd = new Random(); // Random number generator used to generate job properties
int numJobs = 1000; // Number of jobs to generate for each job mixture
int numOutput = 20; // Number of jobs to output results for testing
// Generates each job mixture
JobSet jobs1 = new JobSet(numJobs, rnd, 160, 15, 150, 20);
JobSet jobs2 = new JobSet(numJobs, rnd, 160, 15, 50, 5, 250, 50, 0.8);
JobSet jobs3 = new JobSet(numJobs, rnd, 160, 15, 250, 50, 50, 5, 0.8);
// Runs each scheduling algorithm on first job mixture and outputs response/turnaround time and context switches for each algorithm
// uncomment a JobStats line after running an algorithm to see various stats for a number of individual jobs
Console.WriteLine("Job Mixture 1 Runtime Distribution: 100% - Mu = 150, Sigma = 20\n");
jobs1.FIFO();
//JobStats(jobs1, numOutput);
Console.WriteLine($"{"First-Come-First-Served", -30}: {JobResults(jobs1)}");
jobs1.SJF();
//JobStats(jobs1, numOutput);
Console.WriteLine($"{"Shortest-Job-First",-30}: {JobResults(jobs1)}");
jobs1.STCF(40);
//JobStats(jobs1, numOutput);
Console.WriteLine($"{"STCF (40 unit pre-emption)",-30}: {JobResults(jobs1)}");
jobs1.RR(50);
//JobStats(jobs1, numOutput);
Console.WriteLine($"{"Round Robin (50 unit quanta)",-30}: {JobResults(jobs1)}");
jobs1.RR(75);
//JobStats(jobs1, numOutput);
Console.WriteLine($"{"Round Robin (75 unit quanta)",-30}: {JobResults(jobs1)}");
// Runs each scheduling algorithm on second job mixture and outputs response/turnaround time and context switches for each algorithm
Console.WriteLine("\n" + new string('-', 100) +
"\n\nJob Mixture 2 Runtime Distribution: 80% - Mu = 50, Sigma = 5; 20% - Mu = 250, Sigma = 50\n");
jobs2.FIFO();
//JobStats(jobs2, numOutput);
Console.WriteLine($"{"First-Come-First-Served",-30}: {JobResults(jobs2)}");
jobs2.SJF();
//JobStats(jobs2, numOutput);
Console.WriteLine($"{"Shortest-Job-First",-30}: {JobResults(jobs2)}");
jobs2.STCF(40);
//JobStats(jobs2, numOutput);
Console.WriteLine($"{"STCF (40 unit pre-emption)",-30}: {JobResults(jobs2)}");
jobs2.RR(50);
//JobStats(jobs2, numOutput);
Console.WriteLine($"{"Round Robin (50 unit quanta)",-30}: {JobResults(jobs2)}");
jobs2.RR(75);
//JobStats(jobs2, numOutput);
Console.WriteLine($"{"Round Robin (75 unit quanta)",-30}: {JobResults(jobs2)}");
// Runs each scheduling algorithm on third job mixture and outputs response/turnaround time and context switches for each algorithm
Console.WriteLine("\n" + new string('-', 100) +
"\n\nJob Mixture 3 Runtime Distribution: 80% - Mu = 250, Sigma = 50; 20% - Mu = 50, Sigma = 5\n");
jobs3.FIFO();
//JobStats(jobs3, numOutput);
Console.WriteLine($"{"First-Come-First-Served",-30}: {JobResults(jobs3)}");
jobs3.SJF();
//JobStats(jobs3, numOutput);
Console.WriteLine($"{"Shortest-Job-First",-30}: {JobResults(jobs3)}");
jobs3.STCF(40);
//JobStats(jobs3, numOutput);
Console.WriteLine($"{"STCF (40 unit pre-emption)",-30}: {JobResults(jobs3)}");
jobs3.RR(50);
//JobStats(jobs3, numOutput);
Console.WriteLine($"{"Round Robin (50 unit quanta)",-30}: {JobResults(jobs3)}");
jobs3.RR(75);
//JobStats(jobs3, numOutput);
Console.WriteLine($"{"Round Robin (75 unit quanta)",-30}: {JobResults(jobs3)}");
Console.ReadLine();
}
// Returns a formatted string containing the avg response/turnaround time and context switches for a job set
static string JobResults(JobSet jobs)
{
return($"AvgResponse: {jobs.AvgResponse(),-7:f1} | AvgTurnaround {jobs.AvgTurnaround(),-8:f1} | ContextSwitchs: {jobs.SwitchCount,-5}");
}
