什么是“瓶颈"?在带宽方面意味着什么? [英] What does "bottleneck" mean in terms of bandwidth?

问题描述

什么是瓶颈"，尤其是在网络带宽上使用时?

What is a "bottleneck", particularly when used in terms of network bandwidth?

推荐答案

瓶颈是系统中最慢"的部分.如果您检查啤酒瓶，则其颈部会比底部小，因此会限制您可以饮用的甜蜜蜜的数量.嗯！蜜蜂！ (对不起，被带走了).

A bottleneck is the "slowest" part of a system. If you examine a beer bottle, the neck is smaller than the base and so limits the amount of sweet wonderful nectar that you can drink. Mmmm! Beeer! (sorry, got carried away).

就带宽而言，它是链中最慢的设备.例如，如果您的路由器仅以10meg运行，则在您的PC上具有千兆以太网几乎没有什么区别.路由器存在瓶颈.

In terms of bandwidth, it's the slowest device in the chain. For example, it makes little difference having gigabit ethernet on your PC if your router only runs at 10meg. The router there is the bottleneck.

如果您要从中下载的站点运行的是80年代初的1200/75声波调制解调器，则您的以太网卡，路由器和Internet基础架构的速度有多快都没有关系.另一端是这种情况下的瓶颈.

And it doesn't matter how fast your ethernet card and router and internet infrastructure are, if the site you're trying to download from is running with a 1200/75 acoustic modem from the early '80s. The other end is the bottleneck in that case.

到处都是瓶颈.您的网络设备，PC中的磁盘，必须从RAM中获取而不是从L2高速缓存中获取，在甘特图上找到关键路径，并试图将孩子带到学校，而其中一个是7岁速度的守护程序，而另一个是5岁速度的想要停止"看看每一个该死的花-:)

Bottlenecks are everywhere. Your network devices, the disk in your PC, having to fetch from RAM rather than L2 cache, critical paths on your Gantt chart, trying to walk your kids to school when one is a 7yo speed daemon and the other a 5yo "want to stop and look at every single god-damned flower"-type :-)

基本上，如果速度更快，它将使系统(整体上)更快.这是您需要优化的瓶颈，因为那里的投资回报率应该更高.

Basically, it's the thing that, if it was faster, would make the system (as a whole) faster. It's the bottlenecks where you need to optimise since the return on investment should be higher there.

这篇关于什么是“瓶颈"?在带宽方面意味着什么?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！