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Network Type Mix
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Unregistered User Posts: 509
12/15/2011
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I had a question about the general use of the mix weight value. What kind of values should be in there? Does it work like a percentage? In my test case I am building a custom networ with some 4G, 3G and DSL.
Also, if I missed something in the documentation can you point me there?
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Vadim @StresStimulus Administrator Posts: 583
12/15/2011
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The mix weight values are used as a percentage if the sum of all weights totals to 100. For example, T1 with weight 20 and DSL with weight 80 mean a mix of 20% T1 and 80% DSL.
Instead of percents you can also use weights. For example, T1 with weight 1 and DS with weight 4 will give the same result.
StresStimulus uses the Fiddler model of network emulation. It simply introduces a time delay for the upload and download traffic that corresponds to the emulated bandwidth. The request-trickle-delay and response-trickle-delay parameters are adjusted to reflect the necessary delay. There are number of blogs that discuss this model, for example
http://www.quora.com/Google-Chrome/What-are-some-ways-to-simulate-a...
and
http://mrentropy.blogspot.com/2008/12/using-fiddler-to-simulate-dsl...
Keep in mind that the network emulation can only slow-down the traffic and cannot speed it up.
Also, it is recommended to use different network type than LAN only when the test machine is connected to the Web server through a fast network ( LAN). For example, if your physical connection is DSL, then the emulation of the dial-up will be not accurate.
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