Explain variable-partition contiguous storage allocation, Computer Engineering

Assignment Help:

Explain the concept of variable-partition contiguous storage allocation.

Suppose that we have 1024K main memory available in that 128K is occupied through operating system program. Now there are 4 jobs waiting for memory allocation into a job queue Applying FCFS scheduling policy, so Process 1, Process 2 and Process 3 can be instantly allocated in memory. Process 4 can't be accommodated since there is there is not sufficient space.

  • A hole of 64K is left after loading 3 processes: not sufficient room for other process.
  • Finally each process is blocked. The operating system swaps out process 2 to bring in process 4.

1051_variable-partition contiguous storage allocation.png

  • The other hole of 96K is created.
  • Finally each process is blocked. The operating system swaps out process 1 to bring into again process 2 and other hole of 96K is created.

225_variable-partition contiguous storage allocation1.png


Related Discussions:- Explain variable-partition contiguous storage allocation

Make your simulation run faster, Ameliorating the mechanical delays of seek...

Ameliorating the mechanical delays of seeks and rottion are usually regardeed as major aspects of device drivers for disks. The simplest way for a disk device driver to service dis

What are the objectives of usb, What are the objectives of USB? a) Simp...

What are the objectives of USB? a) Simple b) Low cost c) Easy to use d) Supports wide range of data transfer characteristics e) Plug and play mode of operation

Breif on loosely coupled systems, Loosely Coupled Systems These s...

Loosely Coupled Systems These systems don't share global memory since shared memory concept increases the problem of memory conflicts, which consecutively slows down the

How will you prepare problem statement, How will you prepare problem statem...

How will you prepare problem statement? Problem statement should state what is to be completed and not how it is to be executed. It should be a statement of requirements not a

The current image in gimp, How do we merge an image from a file to the curr...

How do we merge an image from a file to the current image in GIMP? Ans) Use "File then Open as Layers" menu command or just take the file to a window and drop it there. The file w

What interface is extended by awt event listeners, All AWT event listeners ...

All AWT event listeners expand the java.util.EventListener interface.

Ai applications, AI Applications Search is a crucial component of an AI...

AI Applications Search is a crucial component of an AI system, and the search functions are performed over large quantities of difficult structured data using unstructured inpu

Marked statement is implemented , Consider the ReadRear Java method (a)...

Consider the ReadRear Java method (a) Illustrate pictures that explain the data structure every time a checkpoint is reached for the problems of sizes one, two, three and four s

Explain working of dotmatrix or inkjet printers, Q. Explain working of DotM...

Q. Explain working of DotMatrix or InkJet Printers? Three major issues consider the quality of characters generated by DotMatrix/InkJet Printers: - Number of dots in the matrix

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd