大家知道这种技术的细节不？下载一部DVD只需五秒

yutian

网络的速度应该是可以达到这个要求，不过，现在好象还没有出世，在实验室呆着吧

saintdragon

也许在将来集成光路的机器里能实现。

jinian.lu

我今年20
恐怕我是等不到那一天了

轩辕砍刀

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En_route

Am I correct in the following arithmetic

For off-the-shelf ethernet

Case 1: 10Mbs = 1 M-byte per second approx.
[assuming
(a) little collision, i.e. little re-send packets
(b) allowing a little network overheads
-->; Example environment: a LAN with 4 computers less than 3 computers is actually sending big files
]

Case 2: 100Mbs = 10 M-byte per second aporox.
(a) little collision, i.e. little re-send packets
(b) allowing a little network overheads
-->; Example environment: a LAN with 4 computers less than 3 computers is actually sending big files
]

Case 3: 1000Mbs =  100 M-byte per second aporox.
(a) little collision, i.e. little re-send packets
(b) allowing a little network overheads
-->; Example environment: a LAN with 4 computers less than 3 computers is actually sending big files
]

So for case 3, I can have a full 700M byte CD in about 7 seconds -- providing of course the buses can cope with this bandwidth.

In the full internet environment, collisions and resending of packets drastically cut down the useful bandwidth.

Essentially, they are "refining" [of course, a lot of engineering] for how ethernet deals with collisions and multiple streams. Then, there is the fairness element....

* * * * * * * * * * * * * * * * * * * * * * *
Here is what nature reported this March and accordingly, we should see something this summer:

http://www.nature.com/nsu/030324/030324-7.html

alex.an

以后的计算机是不是要内存标配2GB才可以使用~~~

andrewchoi

只是 Loading Balance 技術
要超過 8MBPS 早就已經有了，只是錢的問題。

cby

原帖由 "andrewchoi" 发表：
只是 Loading Balance 技術
要超過 8MBPS 早就已經有了，只是錢的問題。

   

http://www.nature.com/nsu/030324/030324-7.html

reported 7 Giga-byte per minute in the full internet environment.

7 Giga-byte per minute is ABOVE 110 Mega-byte per sec.