Wireshark and Timestamps

[d.j.s.legge () reading ac uk]

Can I please confirm that the timestamps used by Wireshark:

frame_time - This is the actual date/time (as presented by the local 
computer clock) to Wireshark for stamping e.g. num 1. Apr 23 2009 
17:34:49.861864000 num 2. Apr 23 2009 17:34:49.861942000 num 3. Apr 23 2009 
17:34:49.861979000
        

frame_time_delta - This is the time gap between the end of frame x and the 
start of frame y. In example below there is 0.000037 seconds between the 
end of frame # 2 and the start of frame #3 num 1. 0.000000 num 2. 0.000078 
num 3. 0.000037

frame_time_relative - This is essentially frame time sigma. That is the 
cumulative time of all frame (packets) from the first capture at 0.000000 
num 1. 0.000000 num 2. 0.000078 num 3. 0.000115

The question is how does one confirm the exact frame transport time less 
the time_delta? I want to be able to measure the exact period of time that 
it takes a frame to transition the NIC and want any time_delata as a 
seperate reading

thanks

Doug




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