作者assassin88 (AI)
看板Grad-ProbAsk
标题[理工] [计组]-bottlenneck的问题
时间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
但是张帆给的答案是 (100000/2)/16*10^6，请问为什麽他要先除以2呢？
感谢指教~~
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.135.41.17
1F：推 killerjoe:我会直接算16M 次/sec*16 bit/次 = 32M Byte/sec 12/25 23:31
2F：→ killerjoe:再算optical的速度 12/25 23:32
3F：→ killerjoe:较慢者为bottleneck 12/25 23:32
4F：→ assassin88:似乎也可行~那请问你算出的结果是? 12/26 15:51