Answer Posted / neha kela
Thrashing:-
If the process does not have number of frames it needs to support pages in active use, it will quickly page-fault. The high paging activity is called thrashing.
In other words we can say that when page fault ratio decreases below level, it is called thrashing.
Causes:-
1) If CPU utilization is too low then we increase the degree of multiprogramming by introducing a new process to the system. A global page replacement algorithm is used. The CPU scheduler sees the decreasing CPU utilization and increases the degree of multiprogramming.
2) CPU utilization is plotted against the degree of multiprogramming.
3) As the degree of multiprogramming increases, CPU utilization also increases.
4) If the degree of multiprogramming is increased further, thrashing sets in and CPU utilization drops sharply.
5) So, at this point, to increase CPU utilization and to stop thrashing, we must decrease the degree of multiprogramming.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
What are starvation and aging?
What is storage management in operating system?
Which is the fastest operating system?
What is trp timing?
While running DOS on a PC, which command would be used to duplicate the entire diskette?
Describe Recovery from Deadlock?
Is sae same as af?
What are banks in reference to ram?
what is the memory required when a screen has 1024*1280 pixels and each pixel can have around 16 million colors?
Explain busy waiting in operating system (os)?
Define a good platform along with its qualities.
WHATE IS DIFFERENT BETWEEN ANLOG , PLC & DCS OR EXPLAIN ANALOG / PLC / DCS SYSTEME
please prodide me nvidi placement papers
Can I change from 32 bit to 64 bit?
What is Throughput, Turnaround time, waiting time and Response time?
