作者assassin88 (AI)
看板Grad-ProbAsk
標題[理工] [計組]-bottlenneck的問題
時間Fri Dec 25 16:56:51 2009
In a personal computer, the optical drive has a rotation speed 7500 rpm, a
40000000 bytes/second transfer rate, and a 60 ms seek time. The drive is serve
with a 16MHz bus, which is 16-bit wide.
When trsnsferring the 100000-byte data, what is the bottleneck?
我的算法是 100000/16*10^6
但是張帆給的答案是 (100000/2)/16*10^6,請問為什麼他要先除以2呢?
感謝指教~~
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◆ From: 140.135.41.17
推 killerjoe:我會直接算16M 次/sec*16 bit/次 = 32M Byte/sec 12/25 23:31
→ killerjoe:再算optical的速度 12/25 23:32
→ killerjoe:較慢者為bottleneck 12/25 23:32
→ assassin88:似乎也可行~那請問你算出的結果是? 12/26 15:51