You can use dummynet ofcourse, There is extension of dummynet called KauNet. which can provide even more precise control of network conditions. It can drop/delay/re-order specific packets (that way you can perform more in-depth analysis of dropping key packets like TCP handshake to see how your web pages digest it). It also works in time domain. Usually most the emulators are tuned to work in data domain. In time domain you can specify from what time to what time you can alter the network conditions.

如果你想要一个硬件解决方案，Netgear有一系列便宜的(50美元左右)交换机来限制带宽。Netgear Prosafe GS105E和类似的交换机值得研究。

You can use dummynet ofcourse, There is extension of dummynet called KauNet. which can provide even more precise control of network conditions. It can drop/delay/re-order specific packets (that way you can perform more in-depth analysis of dropping key packets like TCP handshake to see how your web pages digest it). It also works in time domain. Usually most the emulators are tuned to work in data domain. In time domain you can specify from what time to what time you can alter the network conditions.

你也可以尝试WANem，这是一个开源的广域网模拟器。您可以下载映像(ISO、Knoppix live CD)或VMWare虚拟设备。

一个简单的mac GUI程序是

https://www.macupdate.com/app/mac/28072/entonnoir/可以限制速度

我爱查尔斯。

免费版对我来说很好。

节流、重写、断点都是很棒的功能。