Transaction response time for Web Protocol with different Internet Explorer versions

Transaction response time for Web Protocol with different Internet Explorer (IE) versions. Here we are comparing IE 8 and IE 10.

1. Does the user agent setting in run time settings have any impact on response times in LoadRunner i.e. if we simulate IE10 browser with VuGen 11.52 compared to if we simulate MS IE 8.0 browser with VuGen 11.0x ?

Answer : User agent string does not change the response time. Some servers respond with a different resources depends on what user agent is sent to them (i.e. if you go to BBC.com or Facebook.com with your mobile device or with your desktop browser you will see a different page) – as a response to the different resources from the server, response time can be different

2. Does the user agent setting define the parallelism mechanism or is it done internally by some other setting in LoadRunner ? Also can you explain how parallelism works in LoadRunner replay?

Answer : According to the user agent – the replay engine will define how many connections can be opened to the server, these setting can be set manually using the web_set_socket_options API

http://blogs.msdn.com/b/ie/archive/2011/03/17/internet-explorer-9-network-performance-improvements.aspx

3. Will it have impact on difference of response times when we record against IE10 compared to IE8?

Answer: Again, if the result page is the same (IE8 vs. IE10), the only factor is the number of connections. IE8 has 6 concurrent connection by default, IE10 has 8 concurrent connections, the extra 2 connections can make a difference, yet you can set these setting with the web_set_socket_options API.

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