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khushtak asked Oct 19, 2015 • retagged Nov 13, 2017 by Arjun

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In the NONIX operating system, the time required for various file read operations are given below:

Disk seek time: 25 msec

Disk latency time: 8 msec

Disk transfer time: 1 msec/Kbyte

Operating system overheads: 1 msec/Kbyte + 10 msec.

What is the time required to retrieve a block of 2Kbytes?

A. 45 msec B. 47 msec

C. 90 msec D. 94 msec

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khushtak asked Oct 19, 2015 • retagged Nov 13, 2017 by Arjun

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time to retrieve 2 Kbytes

Disk seek time + Disk latency time+ Disk transfer time(1 msec/Kbyte)+ Operating system overheads(1 mse/Kbyte + 10 msec) = 25+8+2+2+10= 47ms

Umang Raman answered Oct 19, 2015

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8 + 2 + 2 + 10 + 25 = 47 ms.

Arjun answered Oct 19, 2015

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