Decrease the upload/download speed

I am doing networking project, My current broadband internet speed is 2Mbps my applic开发者_JS百科ation is working correctly. I need to test my application status 512Mbps or any other speed.

How to decrease the speed of internet, Is there any way to increase/decrease the speed by making changes in local machine.

Thanks.

http://netlimiter.com/ our perf team use this very successfully to simulate the real world comms situations. It costs but for a single seat its < 30 US

Fiddler is a free alternative. It's bandwidth limiter can break https in my experience. Oh, and it only works with http connections. But, free so...