.usr - File Extension name vuser files created with Vugen .
.lrs - File Extension for Load runner Scenario Files which is created to LR controller .
.lrr - Filr Extension for Load runner result file which is created by the controller which shall be passed for analysis.
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jaideep
Answered On : Jan 17th, 2012
*.usr - Load runner Script can be interpreted as User
*.lrs - Load Runner Scenario (Controller)
*.lrr- Load Runner Result (Analysis)
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Arun Prasad Mohanty
Answered On : Dec 24th, 2012
.usr-Script extension
.lrs-Scenario Extension
.lrr-Result extension
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