Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
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Category > Management Posted 11 Oct 2017 My Price 5.00

average rotational latency

Suppose that a file initially contains r = 120,000 records of R = 200 bytes each in an unsorted (heap) file. The block size B =2400 bytes, the average seek time s = 16 ms, the average rotational latency rd = 8.3 ms and the block transfer time bu = 0.8 ms. Assume that 1 record is deleted for every 2 records added until the total number of active records is 240,000.

 

a. How many block transfers are needed to reorganize the file?

b. How long does it take to find a record right before reorganization?

c. How long does it take to find a record right after reorganization?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 11 Oct 2017 09:10 AM My Price 5.00

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