Social Media Means
Social Media Means
Photo: RODNAE Productions
FIFO which is also known as First In First Out is one of the types of page replacement algorithm. The FIFO algorithm is used in the paging method for memory management in an operating system that decides which existing page needs to be replaced in the queue.
30 Top Earning Websites That Make A Lot Of Money Online Rank Website Annual Revenue 1 Amazon $107 Billion 2 Google $74.98 Billion 3 JD.com $28...
Read More »
Is Digital Marketing a good career? Digital marketing is a well-paid job. At the executive level, the average salary of a digital marketer lies...
Read More »Overview As the name suggests, FIFO is based on the “First in First out“ principle which clearly states that the oldest (first) entry, or “head” of the queue, is processed first just like the queues in movie theatres a ticket. FIFO page replacement algorithm is involved in memory management when new pages in a queue are demanded, to replace the existing page with the new page. Scope In this article, we’ll learn about the most popular replacement algorithm ‘FIFO page replacement algorithm’ with the help of examples. We’ll talk about how FIFO algorithm works, along with its advantages and disadvantages, and will also cover the implementation of the FIFO Page replacement algorithm using a programming language. What is the FIFO Page Replacement Algorithm? FIFO which is also known as First In First Out is one of the types of page replacement algorithm. The FIFO algorithm is used in the paging method for memory management in an operating system that decides which existing page needs to be replaced in the queue. FIFO algorithm replaces the oldest (First) page which has been present for the longest time in the main memory. In simple words, When a new page comes in from secondary memory to main memory, It selects the front of the queue which is the oldest page present, and removes it. Why do we need to swap the pages?: Since we have a fixed number of frames and all the processes cannot be stored in the main memory at a single time hence we use page replacement algorithms to store pages of a process instead of the whole process. How Does FIFO Page Replacement Work? FIFO is implemented in the operating system by keeping track of all the pages in a queue. The newest page is at the head of the queue and the oldest (first) page is in the tail. "To illustrate how FIFO page replacement algorithm works in a real-life, Consider you are the owner of a supermarket which has N number of shelves to put exactly N different products. One day, A company launches a new convenience powdered milk, organic food, and glass noodles that can be reconstituted in a microwave oven. So in order to sell the new products, you need to get rid of one old product. Now you have to find out which product you should eliminate from your store, So you need to find the product which the supermarket has been stocking the longest. After finding the product, Just like the FIFO algorithm, the one at the front of the list is removed whereas the new one goes on the back of the list i.e the reconstituted products.” The OS maintains a list of all pages which are residing in the memory. When a new page brings from the secondary memory. The new page requests the main memory. On a page fault, the head of the list i.e the oldest will be removed. The new page will be added at the tail of the list. Page Fault: A page fault occurs when a page requested by a program running in the CPU is not present in the main memory, but in the address page of that program. A page fault generally creates an alert for the OS. Consider the above flow diagram for a better understanding of the FIFO page replacement algorithm in os.
Average time Most runners who are reasonably fit and clock 15–30 miles per week can expect to finish a 10K race in 50–70 minutes. More advanced...
Read More »
If you want to know how to become famous on social media, follow these 5 steps: Share Your Story. Know Your End Goal. Have A Social Media Content...
Read More »FIFO Pseudocode # Declare 'S' as a set of current pages in the system. # Declare a Queue name QPage which will be used to store the incoming pages. # Queue will store in a FIFO manner # page fault PF is Initially set to zero. S= set (); QPage = Queue(); PF= 0 ; for k = 0 to length (N) do if length (S) < C then if P[k] not in S then S.add(P[k]); PF = PF + 1 ; QPage.put(P[k]); end else if P[k] not in S then val = QPage.queue[ 0 ]; QPage.get(); S.remove(val); S.add(P[k]); QPage.put(P[k]); PF = PF + 1 ; end end end return PF; Here, ' P ' is used to represent pages. ' is used to represent pages. ' N ' is the number of pages.
male As of April 2022, approximately 53.9 percent of YouTube users were male. By comparison, female users on the popular social video platform were...
Read More »
Someone who is just starting might make $100 now and again. At the same time, some of the most well-known influencers can earn millions of dollars....
Read More »
Friendster. At one point, Friendster was considered the premier social media site.
Read More »
Here are seven disadvantages to introversion: Introverts often get labeled as weird or snobbish. ... Introverts don't always get the party...
Read More »
Potentially. The numbers vary from influencer to influencer. They can become millionaires or find themselves relying on social media to supplement...
Read More »
Top 30 Hardest Jobs In The World Military. Coming first on our list of the hardest jobs in the world is the military. Healthcare Worker. There is...
Read More »
Promotion
Promotion
Promotion