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How to permanently set default options for ring buffer capture

asked 2019-05-28 09:20:01 +0000

THerrmann gravatar image

updated 2019-05-28 09:20:14 +0000

I often use ring buffer capturing for long running tests, and I always set the "new file after 1 kbytes" to "100 mbytes", which involves a lot of clicking. Same thing for "use a ring buffer with 2 files" which I reset to 10. The capture section of the preferences dialog does not offer fields to store those values.

Is there a possibility to - just save the last used values for the future or - a preferences setting that I can use to preset the ring buffer capture options to useful values?

btw, the default values of "1kbyte" and "2 files" are not useful.

Regards Thomas

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answered 2019-05-28 09:55:08 +0000

SYN-bit gravatar image

AFAIK there are no preferences that can be saved for the ringbuffer options. If you'd like the default values to be changed (I agree the current ones are not useful and merely function as an example) you would need to file an enhancement request on Bugzilla. You can add the request to have the last values saved in the preferences (which makes sense as most people will have a workflow they will repeatedly use).

For now, an option could be to create a script that uses dumpcap with your settings that you can start when you want to capture. It would have to contain something like:

dumpcap -i <interface> -b filesize:100000 -b files:10 -w <filename.pcapng>

Hope this helps!

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Thanks, that's pretty much what my I expected / already knew. I will file a bug report.

THerrmann gravatar imageTHerrmann ( 2019-05-28 10:07:34 +0000 )edit

For the record, the enhancement request is 15800

THerrmann gravatar imageTHerrmann ( 2019-05-28 11:01:32 +0000 )edit

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Asked: 2019-05-28 09:20:01 +0000

Seen: 520 times

Last updated: May 28 '19