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

.bus, clasification of bus

clasification of bus

What are the two aspects of locality of reference, What are the two aspects...

What are the two aspects of locality of reference? Define them. Two aspects of locality of reference are temporal aspects and spatial aspect. Temporal aspect is that a r

Why we need parallel programming languages, Q. Why we need parallel program...

Q. Why we need parallel programming languages? The parallel programming languages are created for parallel computer environments.  These are developed either by creating new la

Logical difference among move a to b and compute b = a, What is the  logic...

What is the  logical difference among Move A TO B and COMPUTE B = A ? Ans) In case of Move A TO B it will move whatever the value of a in to b. It mean it will move nume

Explain how presentation layer helps in establishing, Explain how presentat...

Explain how presentation layer helps in establishing and processing data in End to End layers. The idea of the presentation layer is to stand for information to the communicati

Explain about the view selection problem, Often calculating all the data is...

Often calculating all the data is not possible by aggregations for this reason some of the difficult data problems are solved. In order to verify which data should be solved and me

What are the techniques of data collection, What are the techniques of Data...

What are the techniques of Data Collection It can be either automatic or manual. Manual techniques can include: -  Keypads/Keyboards to type in data -  touch screens to s

State about the computer memories, Computer Memories Computer memories...

Computer Memories Computer memories are either external or internal. Internal memories are either RAM (random access memory) or ROM (read only memory). External memories can t

How is a microsoft crm workflow tool enabled, How is a Microsoft CRM Workfl...

How is a Microsoft CRM Workflow tool enabled? A Microsoft CRM Workflow tool enables certainly one to as given below: • Explain business policies based upon established proce

Define compilers with high level programming language, Define Compilers wit...

Define Compilers with High Level Programming Language? All high-level programming language (except strictly interpretive languages) comes with a compiler. Effectively the compi

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