[lttng-dev] babeltrace

[Jessica Foest]

Thanks for your detailed responses :)
Actually i will begin by taking my own trace that i will configure it in
advance ( same event type , and i will add the different event context that
i need ) .
It's my first time to develop with python and i don't really know the
architecture of babeltrace , So can you help me and tell me how to proceed
to filter my data from CTF to the output Format that i will choose ?


2014-05-08 11:53 GMT-04:00 Alexandre Montplaisir <alexmonthy at voxpopuli.im>:

>
>  To avoid doing a complete first pass of the trace, you can just
>> iterate on the event types as described in the metadata, and take note
>> of all the possible field you can find in the trace. Then, during your
>> only pass, you already know all your "columns".
>>
>
> That's true. Although right now TMF doesn't have an API to ask a trace
> "give me all the event types you have", other than just reading the trace ;)
>
> wrt CTF, it's possible to have events in the metadata that don't actually
> show up in the trace. But that's not really a problem, at worst you'd end
> up with empty columns.
>
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