Hi,
I'm using the babeltrace python bindings (v1.5.x) to convert some raw
data I have into a CTF file.
This raw data is organized in fixed data chunks composed by serializing
the events for each CPU:
[cpu0, cpu0, cpu0, ..., cpu1, cpu1, cpu1, ..., cpu2,... ]
Each event for each CPU has a timestamp that is monotonic within each
CPU set.
I wanted to create one stream per CPU and since the events are the same
for each CPU, I was using a single stream_class linked to a stream
object for each CPU. Something in the structure similar to [0] with:
stream_cpu0 = writer.create_stream(stream_class)
stream_cpu1 = writer.create_stream(stream_class)
stream_cpu2 = writer.create_stream(stream_class)
...
The problem is that being the clock one for the stream_class when
feeding the events to the library I get a:
ValueError: Invalid time value
When the first event on cpu1 is parsed, because the timestamp is in the
past with respect to the timestamp of the latest event of the cpu0.
I can sort the events before feeding them to babeltrace but this seems
sub-optimal to me. My question is: am I using the library correctly or
there is any way to achieve this?
Thank you,
[0] https://lists.lttng.org/pipermail/lttng-dev/2015-November/025231.html
--
Carlo Caione
_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
