Simulate network speeds using Fiddler

Question

I am using Fiddler and want to simulate different network speeds

Is there any published data that I can use to simulate different speeds using the delay value ?

Answer 1

I made changes to request-trickle-delay and response-trickle-delay that EricLaw Recommended. I used SpeedTest.Net to valaidate the changes I made. They didn't match up perfectly. For example I expected that if I set Trickle Delay values to 8 I would get download speed of 1 Mbps, but actually got 2.05 Mbps. Based on EricLaw's answer at least I was able to identify a pattern. Thanks Eric.

After each change to the Fiddler CustomerRule.js file I re-enabled "Simulate Modem Speed". FYI, when you make a change to the CustomerRule.js file the "Simulate Modem Speed" is disabled. So you must re-enable the setting.

I added a few images of results from SpeedTest.net.

Below are the results for each setting change:

Fiddler Settings

Here I set request-trickle-delay and response-trickle-delay to 16. As you can see I received 1.03 Mbps

Here I set request-trickle-delay and response-trickle-delay to 32. As you can see I received 0.52 Mbps