In this video, we dive into contiguous memory management, an essential concept in computer memory organization. Learn how contiguous memory allocation works, how it optimizes resource usage, and the role it plays in system performance. We also explore its advantages, limitations, and real-world applications. If you're curious about efficient memory management and want to understand how operating systems allocate memory, this video is perfect for you!

---------------------------------------------


Calculate the time at which J7 will be completed. (Algorithm is best-fit)

Request No. J1 J2 J3 J4 J5 J6 J7 J8
Request size 2 KB 14 KB 3 KB 6 KB 6 KB 10 KB 7 KB 20 KB
Usage 4 10 2 8 4 1 8 6

Answer:

19
We will put J1 at location 3 in memory, the internal fragmentation is zero. It will execute for 4 unit of time
Now, we will put J2 in memory at location 2, where it will get execute for 10 units of time. At present the internal fragmentation at memory location 2 is of 6 KB.
Now, we put J3 in memory location 0, where it will get executed for 2 unit of time. At present the internal fragmentation at memory location at 0 is 1 KB.
Then J4 will arrive, we put it in memory location 1, where it will get executed for 8 units of time. At present the internal fragmentation at memory location 1 is 2 KB.
We want to put J5 in memory but there is no empty slot. So, we will wait until J4 gets terminated and then we will place J5 at memory location 1, where it will get executed for 4 units of time.
Now we want to put J6 in memory but there is no empty slot that can accommodate J6. So we will wait till J2 gets completed and then we will place J6 at memory location 2. Where it will be executed for 1 unit of time.
We want to put J7 in memory but again there is no empty slot which can accommodate J7. So we will wait till J6 gets completed and then place J7 at memory location 2, where it will get executed for 8 unit of time.
Therefore J7 will be completed at time unit 19 and time at which J7 enters RAM is 11.
#OperatingSystem #OS #asadnomanee #banglalecture #CSE
#Lecturelia #MBSTU #MBSTU_CSE
#lecturelia #banglatutorial #bangla