題組內容
5. A disk has 24000 cylinders, cach with 16 tracks of 512 blucks. A seck takes I ns per cylinder moved. II' no attempt is made to put the hioks of a lile close to each otber. two blocks that are logically consecutive (i.c.. follow one another in the file) will require aun averragc seck. which tikes 6 mis. If. however. the operating system makes un attempt to cluster selated blocks. the meun interblock distancc c:ul be reduced lo 2 cylinders and the seek time seduced to 200 jas. Assuming that the rotational laleney is 3 mi and the transfer time is 10 ps per block, answer the following questions.
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