[2021] PSU - CMPSC 473 Operating Systems - Final Exam - Q6 Disk Write Seek Time
Q6
Having opened the file file.txt, the process issues the following system call: write(fd, buf1, 40960). Here fd is the file descriptor returned by open and buf1 is a correctly initialized in-memory buffer whose contents the process wishes to write into file.txt. Make the same assumptions as above. Furthermore, assume that any contents brought into memory by the execution of the open system call are still in memory. Assume also that all the on-disk sectors making up the content to be written reside on the same track. Calculate the number of disk seeks caused by this write to the file.
o 6
o 5
o 14
o 8
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