CS609: System Programming Assignment No. 06 Semester: Fall 2012 Due Date: 06/02/2013

[Rania Puri]

Assalam-o-Alaikum

Assignment # 6 CS609 has been uploaded. Its due date is 06 -02- 2013. Please discuss here about the assignment

Thanks 

Instructions

Please read the following instructions carefully before submitting assignment:

It should be clear that your assignment will not get any credit if:

• The assignment is submitted after due date.
• The submitted assignment does not open or file is corrupt.
• Solution is copied from any other source.

 

Objective

The objective of this assignment is to enhance your knowledge about;

• File System
• Block size
• Internal Fragmentation

 

Assignment          

 

Part a)

10 Marks

 

What advantage and disadvantage do we get if Bytes per Sector used in a file system is too small/large? Your answer shall be in the following tabular format.

Scenario	Advantage	Disadvantage
No. of Bytes per Sector is Small
No. of Bytes per Sector is Large

 

Part b)

10 Marks

Let suppose we have to store files on a hard disk having sizes given as below.

840 Bytes, 1790 Bytes, 650 Bytes, 2470 Bytes and 2840 Bytes.

 

You have to choose an optimal size of sector on your disk which also referred as Bytes per Sector or Block Size. You have the choice to choose the Sector size only from typical values 512 Bytes, 1024 Bytes or 2048 Bytes. Do not make random guess, do some calculations and report them in your solution. Based on your calculations, answer the following questions with reasons stated briefly.

 

Question No.1: What Block size will you choose if the objective is to have optimal disk space utilization?

 

Question No.2: What Block size will you choose if the objective is to have reduced access time?

 

 

Submission

You are required to submit a single MS word file through LMS.

 

Fall%202012_CS609_6%20%281%29.doc

[diya23]

thanks Hamad bhai aap is bar top kren gy hmari duen ap k sath hein INSHALLAH

[preety]

access time ka formula kiya he?

[Muzafar Khan (BS Completed)]

agree with hammad...its 100% correct

[ZEESHAN NADEEM]

yes

[farzana jabeen]

thanks a lot hammad! So nice of u!

[Pari_sweet]

calculation table bhi manga hua hy ny sir ny?

[Aqeel Anjum]

shahid bhai, shrm kren, sol ka keh kr gayb ho gay,

And thanks hammad bro

[Pari_sweet]

thank you hammad  bahi 

[╰☆True☆╮]

shahid bhai = fraad bhai

mujhay lagta ha unhn ne khud bhi nahi kia bachun k jazbat se khel rahay hain..

[ZEESHAN NADEEM]

hammad is good better best

[turnnam taslim]

any one know how to calculate access time?
UNUSED SPACE = BLOCK SIZE - FILE SIZE
=512-840
=-328

= 512-1790
= -1278
=512-650
=-138
=512-2470
=-1958
=512-2840
=-2328

tell me it is correct ???????????????

[ZEESHAN NADEEM]

yes