I have installed the private instance and i am able to run the tests using a web browser. For ex:
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Enter the URL to be tested and then click on submit. I see some test results
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Now i execute(Have the node wrapper installed):
#webpatetest test http://urltobetested.com -s myprivateinstance.webpagetest.com > testresults.txt -
Fetch the JSON URL from test results, parse it and fetch the FirstByte, Loadtime, FullyLoaded time etc.
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The test results vary by approximately 2 Seconds when compared to the test results generated on a browser in step 2 above. I fetch the median values from the JSON.
Why is there a significant difference in test results? Am i missing on some thing.