computer-science Verified Precision Tool
CPU Job Scheduling & Gantt Chart Calculator
Calculate FCFS, SJF, SRTF, and Round Robin CPU process scheduling metrics with interactive Gantt chart visualizers.
Interactive Algorithm Visualizer
First Come First Served (FCFS)
Enter your custom input data → Run the real algorithm engine → Observe step transitions.
⚙️ Customize Algorithm Input Data
P1
Arrival Time
Burst Time
P2
Arrival Time
Burst Time
P3
Arrival Time
Burst Time
Mathematical Formula
Turnaround Time = Completion - Arrival; Waiting Time = Turnaround - Burst
Overview & Explanation
CPU Job Scheduling determines which process in the ready queue is allocated the CPU.
How It Works
- Track process arrival times and burst times.
- Execute processes according to FCFS or Round Robin policy.
- Compute turnaround and waiting metrics.
Practical Applications
- OS kernel thread scheduling analysis
- Performance modeling
FCFS Scheduling Example
Processes P1(0, 4), P2(1, 3)
1
P1 Exec
t=0..4
= Completion: 4, TAT: 4, WT: 0
Frequently Asked Questions
What is the Round Robin time quantum tradeoff?
A very large quantum converts Round Robin into FCFS, while a tiny quantum causes high context-switch overhead.
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