[理工] Disk size 計算 memory access
A 255-GB disk has 65536 cylinders with 255 sectors per track
and 512 bytes per sector. How many platters and heads does this
disk have?
請問一下這題要怎麼算
本魯一直搞不太懂Disk的計算題
Consider a computer system that has cache memory,main memory and disk,
and an operationg system that uses virtual memory. It takes 2ns to
access a word from the cache, 10ns to access aword from the main memory
, and 10ms to access a word from the disk. If the cache hit rate is 95%
and main memory hit rate (after a cache miss) is 99%,what isthe
average time in ns to access a word?
謝謝！
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※ 編輯: ex8338 (150.116.123.65), 02/16/2017 14:39:52
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