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What is the unit of tcp.time_delta in IO Graph

asked 2018-08-15 17:33:50 +0000

webber84 gravatar image

updated 2018-08-15 23:56:32 +0000

Guy Harris gravatar image

I created an IO graph and set AVG(tcp.time_delta) as the Y axis. What I expected is to show average time_delta in seconds in Y axis. But what I actually got is values such as 210^6 and 1.210^7 (see the image below).

Is it something with the unit of tcp.time_delta? Is the tcp.time_delta in second, millisecond or nanosecond by default? And how can I achieve my expected behavior to show Y axis in second?

Thanks a alot.

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answered 2018-08-15 19:57:09 +0000

mctmike gravatar image

The unit of time is seconds, but that means this file of yours is exhibiting some preposterous TCP delays. The ^6, etc. are scientific notation - used for representing very large or very small numbers. Can you attach the trace file?

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The trace lasted only minutes. I think there should not be time_delta as large as 10^6 seconds (which is 11 days). I'll attach the trace file later.

webber84 gravatar imagewebber84 ( 2018-08-16 04:47:58 +0000 )edit

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Asked: 2018-08-15 17:33:50 +0000

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Last updated: Aug 15 '18