In a Linux environment, disk scheduling plays a crucial role in optimizing input/output (I/O) performance. Disk scheduling algorithms determine the order in which requests for disk access are serviced, ensuring efficient utilization of disk resources and minimizing access latency. This article will explore the importance of disk scheduling in Linux and provide insights into various disk scheduling algorithms and their implementation in the Linux kernel.

Examples:

1. FCFS (First-Come, First-Served) Scheduling:

   • Example code snippet illustrating FCFS disk scheduling algorithm in Linux.
   • Demonstration of how FCFS handles disk access requests in the order they arrive.

2. SSTF (Shortest Seek Time First) Scheduling:

   • Implementation of SSTF disk scheduling algorithm in Linux.
   • Comparison of seek time reduction achieved by SSTF compared to FCFS.

3. SCAN Scheduling:

   • Practical usage of SCAN disk scheduling algorithm in Linux.
   • Command-line examples showcasing how SCAN optimizes disk access by servicing requests in a sweeping motion.

4. C-LOOK Scheduling:

   • Script demonstrating the C-LOOK disk scheduling algorithm in Linux.
   • Explanation of how C-LOOK minimizes disk arm movement by servicing requests only in a specific direction.