hi,
i am having real trouble with this question. Can you help? here is the question, it should be roughly 500 words.
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The aim of this work is to use performance monitoring tools to investigate virtual memory and some related issues in Windows NT.
RowCol.c is an application program which can be used to experiment with the properties of virtual memory. Build and run the program and examine the source code. Note that the program allocates some memory and then accesses the memory in two different ways. What is the difference between the two ways? What variation do you see in time of access to memory? Investigate the operation of the program in any way that you think appropriate and try to explain the variation. Do not try to oversimplify this issue; I am not expecting you to produce a simple answer, rather I want you to investigate the issue and submit a description of your investigation and your conclusions. Things that you might try are running the memory monitoring tools whilst running RowCol, draw graphs, modify the program to investigate specific ideas....
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and my answer so far:
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The first way writes to the memory block column by column. The second way writes to the memory block row by row. When memory Is accessed in the computer, first the row address is selected, and then the column address. So accessing memory is quicker if it is done row by row?. Does accessing the memory column by column cause more page faults?
However, virtual memory/accesing the hdd is makes no diff if done in rows or columns??
