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Pcap files are opening very slow [closed]

asked 2019-08-29 14:56:11 +0000

Ladislav gravatar image

Hello, Even small trace (300kB) is loading 3 minutes. Reinstall of wireshark and ncap did not fix the issue. i have windows 7 x64 Wireshark Version 3.0.3 (v3.0.3-0-g6130b92b0ec6)

What could be the cause of the issue? Thanks

Best regards Ladislav Karlovsky

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Closed for the following reason the question is answered, right answer was accepted by Ladislav
close date 2019-08-30 07:50:18.086602


The traffic in the capture can affect the processing required when loading. Can you share the capture, as otherwise it's difficult to comment?

grahamb gravatar imagegrahamb ( 2019-08-29 15:01:00 +0000 )edit

Yes sure, here it is:

but it is not only this trace - this behavior occuring with each trace that i am trying to open. Thank you for the reply

Ladislav gravatar imageLadislav ( 2019-08-29 15:05:20 +0000 )edit

Loads almost instantly for me (Win 10, quite a powerful machine).

I wonder if it's due to something in your profile, or name resolution? Can you try disabling name resolution (View -> Name Resolution), and create a new profile (Edit -> Configuration Profiles...)?

grahamb gravatar imagegrahamb ( 2019-08-29 15:39:34 +0000 )edit

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answered 2019-08-29 17:24:34 +0000

Pascal Quantin gravatar image

This behavior is often seen when you have a big (Pre)-Master-Secret log file (in TLS/SSL preferences) and you have TLS/SSL traffic (as in your capture). Could you double check this and clear the file?

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Hello, yes thanks a lot. I have totally forgot that i am capturing this info about pre master to log file which had like 100 MB. It is fixed now. Thanks a lot! :)

Ladislav gravatar imageLadislav ( 2019-08-30 07:49:54 +0000 )edit

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Asked: 2019-08-29 14:56:11 +0000

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Last updated: Aug 29 '19