Thursday, February 08, 2007

Monolithic and Microkernel architectures !!!

As I said in my previous post, I am going to explain about microkernel and monolithic kernel architectures. Read my previous post to learn about kernel.

Microkernel Architecture

In the microkernel architecture the kernel provides only a necesary minimum of functionality and can be implemented in a small and compact form. Building on this microkernel, the remaining functions of the operating systems are relocated to autonomous processes communicating with the microkernel through a well defined interface.


  • Less trouble to maintain
  • Individual components can work independently of each other and are easier to replace.
  • Developing process is less complicated

  • Microkernel architecture is slower than monolithic architecture.
  • Well defined interfaces are need to communicate.

Monolithic Kernel Architecture

In monolithic architecture the kernel is maintained as a single component with all the functionalities incorporated. This type of architecture is mainly used where good run time behaviour is the primary consideration.


  • Faster than microkernel architecture.
  • No well defined interfaces are needed for communication as in microkernel architecture.

  • Difficult to maintain.
  • Less stable.
  • Kernel often become very huge.
  • Bugs in one part of kernel produce many side effects.


Benson said...

Thanks alot helped me on my assignment!!

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