The Overall Elapsed time from the Statistics tab is calculated using the ClientDoneResponse
value less the ClientBeginRequest
value. Note that by default, Fiddler captures timestamps using the default system clock with a precision of 15.6 milliseconds (ms). If an operation takes less time than the 15.6ms it will appears as no time at all. This may result in slightly rounded values.
For example, the provided ClientDoneRepsonse of 20.382 less the ClientBeginRequest of 19.004 is 1.378 which is about what the overall elapsed time is recorded.
To enable high-resolution timers of 1ms instead of 15.6ms, select the checkbox under Tools > Fiddler Options > General
tab. This will also increase power consumption on mobile devices and laptops.
Please let me know if you need any additional information and thank you for using the Telerik Fiddler forums.
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