[lttng-dev] Merge two LTTng CTF traces into one

[Matthew Khouzam]

Sorry, I was a little hasty in my reply. You can export traces, but not
experiments yet, this is a feature to expect soon if people want it.


On 14-12-22 10:17 AM, Matthew Khouzam wrote:
> Michel has hit the nail on the head there.
>
> I would just like to add that one can export an experiment in trace
> compass. This means that the two traces are shipped in a zip with the
> synchronization. You can also apply a constant clock offset if network
> events are unavailable. If you really really want to make a CTF trace as
> an output, perhaps look at the python bound babeltrace?
>
> BR
>
> Matthew
>
>
> On 14-12-22 08:07 AM, Michel Dagenais wrote:
>> Normally, the two traces are stored separately and they are "merged"
>> at display time in TraceCompass. If they were taken on the same host,
>> they use the same clock and should be naturally aligned. If they come
>> from different hosts and you want very fine symchronization, you need
>> some communication events from which to synchronize the traces. TCP
>> packet send and receive events are typically used. If you want to look
>> at two traces simultaneously, it normally implies that the two are
>> related, the two nodes communicating through the network.
>>
>> ------------------------------------------------------------------------
>>
>>     Hi,
>>
>>     Is there any way to merge the two CTF traces and see them in one
>>     with trace synchronization ? 
>>
>>     How it is related to trace synchronization using network events ? 
>>
>>
>>     Thanks,
>>     Divya
>>
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>>
>>
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