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1answer
49 views

How to calculate the size of page table

Assuming pages of 4Kbytes and 32-bit addressing, estimate the maximum size of the page table for each process. I think this is $2^{32}$? Is there a formula for this?
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2answers
58 views

Given the logical address, how to extract the page number?

I am studying Computer Systems. I have th following question and its answer: Given the logical address 0xAEF9 (in hexadecimal) with a page size of 256 bytes, what is the page number? ...
3
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1answer
64 views

Look Ahead buffer vs Translation Look aside buffer

I know that Translation look aside buffer is used for address translation in paging to achieve better performance. I came across term called Look Ahead buffer in a document which said it implements ...
1
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1answer
119 views

clarification about Algorithm of page replacement LRU with reference bits

Studying LRU approximation Algorithms I think to have not understand how it works, for example: ...
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0answers
125 views

Effective Acces time in Demand Paging system with Associative memory

Q: Consider a demand-paging system with a paging disk that has an average access and transfer time of 20 milliseconds. Addresses are translated through a page table in main memory, with an access time ...
0
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1answer
324 views

How to work out physical address corresponding to logical address?

I am looking to calculate the physical address corresponding to a logical address in a paging memory management scheme. I just want to make sure I am getting the calculation right, as I fear I could ...
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2answers
659 views

Calculation of effective average instruction execution time in a 2-level paging system

System has a two level paging scheme Average CPU time for a instruction = 100ns Average number of memory accesses per instruction = 2 Regular memory access = 150 ns Page fault service ...
2
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1answer
73 views

Processes and Segmentation

The following problem was on my final and in Gate 2006, but I don't understand how to solve it: Different methods of memory management have different overheads: ...
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2answers
274 views

How does increasing the page size affect the number of page faults?

If we let the physical memory size remain constant, What effect does the size of the page have on the number of frames? What effect does the number of frames have on the number of page faults? ...
7
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1answer
943 views

Swap space management during pure demand paging

The following is a doubt that I came across while doing a OS home assignment - however, it seems more concept-based than a straightforward coding question, so IMHO I don't think the homework tag is ...
6
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1answer
743 views

How to interpret “Windows - Virtual Memory minimum too low” from a CS student point of view?

On my old 256MB RAM, pc I get this message. (I guess it is quite common) Windows - Virtual Memory minimum too low Your system is low on virtual memory. Windows is increasing the size of your ...