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Operating System Multi-Threading

Operating System Multi-Threading

What is Thread ?

  • A thread is a lightweight sub-process, the smallest unit of processing or a basic unit of CPU utilization.

  • It consist a program counter(PC), stack space, set of registers and a thread ID

  • Threads are the entities scheduled for execution on the CPU.

  • A thread is a single series stream within in a process.

  • Each thread has its own stack.

  • Threads are dependent of one other.

  • Threads helps the other threads in operating system.

  • If one thread is blocked then, another thread does not affected it proceed without blocking..

  • Threads shares common memory space.

  • Context switching are fast in threads.

  • A thread uses parallelism, which provides a way to improve application performance.

Multithreading Models in operating-system

  • Many-To-One Model

  • One to One Model

  • Many to Many Model

Advantages of Operating System Multi-Threading

  • Threads minimize the context switching time.

  • Use of threads provides concurrency within a process.

  • Efficient communication.

  • It is more economical to create and context switch threads.

  • Threads allow utilization of multiprocessor architectures to a greater scale and efficiency.

  • Improved server responsiveness.

  • Minimized system resource usage.