Notes: Operative Systems – Part 10

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  • I/O handling
  • Shareable versus dedicated devices
  • Programmed I/O
  • Interrupt-driven I/O
  • DMA I/O
  • I/O software layers
  • Device drivers
  • Disk arm scheduling algorithm
  • Elevator (SCAN) algorithm

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Notes: Operative Systems – Part 7

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NOTIFICATION: These notes are published for educational purposes. Using these notes is under your own responsibility and risk. These notes are given ‘as is’. I do not take responsibilities for how you use them.

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  • Race condition
  • Dead lock
  • Mutual exclusion
  • Mutal exclusion with busy waiting
  • Semaphore
  • Semaphore down operation
  • Semaphore up operation
  • Mutex
  • Threads
  • User versus kernel threads
  • Local versus global versus hybrid thread scheduling
  • Segmentation
  • Paging
  • Pure segmentation

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Notes: Operative Systems – Part 2

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NOTIFICATION: These notes are published for educational purposes. Using these notes is under your own responsibility and risk. These notes are given ‘as is’. I do not take responsibilities for how you use them.

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  • Dispatcher
  • Scheduling criteria
  • Optimization criteria
  • Scheduling algorithm goals
  • First-come, first-served scheduling (FCFS)
  • Shortest-job-first Scheduling (SJR)
  • Shortest Remaining Time Next (SRTF)
  • Pre-empty Shortest-job-first (PSJR)
  • CPU burst
  • Priority scheduling
  • Round Robin (RR)
  • Time quantum
  • Context switch time
  • Multilevel queue
  • Multilevel feedback queue (MFQ)
  • Real-time scheduling
  • Flow of control
  • Fair scheduling
  • Work-conserving
  • Non-work-conserving
  • Organization of Linux kernel
  • Privilege modes
  • System calls

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