[lttng-dev] Need help in converting trace data into CTF

[lttng-dev] Need help in converting trace data into CTF

[Ravindra Kumar Meena]

Hi LTTng developers,

I have been selected at GSoC 2019 with organization RTEMs. My project is
https://devel.rtems.org/ticket/3696

The objective of the project is to convert the trace data into CTF. The
trace data is already generated by the system. All that is left is to
convert the trace data into CTF. I am interested in CTF because I want to
send it to trace compass for analysis.

Any idea how can I achieve this?

-- 
*Ravindra Kumar Meena*,
B. Tech. Computer Science and Engineering,
Indian Institute of Technology (Indian School of Mines)
<https://www.iitism.ac.in/>, Dhanbad
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[lttng-dev] Need help in converting trace data into CTF

[Mathieu Desnoyers]

----- On May 16, 2019, at 1:42 AM, Ravindra Kumar Meena rmeena840 at gmail.com wrote:

> Hi LTTng developers,
> I have been selected at GSoC 2019 with organization RTEMs. My project is [
> https://devel.rtems.org/ticket/3696 | https://devel.rtems.org/ticket/3696 ]

> The objective of the project is to convert the trace data into CTF. The trace
> data is already generated by the system. All that is left is to convert the
> trace data into CTF. I am interested in CTF because I want to send it to trace
> compass for analysis.

> Any idea how can I achieve this?

If you intend to produce CTF traces natively from the target, you will want to
look into the barectf project [1].

However, if your goal is to do a post-processing phase to convert traces from
some existing format to CTF, you will want to look into the Babeltrace project [2]
master branch which is in preparation for Babeltrace 2.0. The approach here
would be to create a Babeltrace 2 source plugin which reads your trace format into
the Babeltrace 2 intermediate representation by using the APIs exposed to
plugins by Babeltrace 2. Babeltrace 2 has a generic CTF sink which can serialize
the resulting trace intermediate representation into CTF.

Thanks,

Mathieu

[1] https://github.com/efficios/barectf 
[2] https://diamon.org/babeltrace/


> --
> Ravindra Kumar Meena ,
> B. Tech. Computer Science and Engineering,
> [ https://www.iitism.ac.in/ | Indian Institute of Technology (Indian School of
> Mines) ] , Dhanbad

> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

[lttng-dev] Need help in converting trace data into CTF

[Ravindra Kumar Meena]

On Fri, May 17, 2019 at 12:22 AM Mathieu Desnoyers <
mathieu.desnoyers at efficios.com> wrote:

> ----- On May 16, 2019, at 1:42 AM, Ravindra Kumar Meena
> rmeena840 at gmail.com wrote:
>
> > Hi LTTng developers,
> > I have been selected at GSoC 2019 with organization RTEMs. My project is
> [
> > https://devel.rtems.org/ticket/3696 |
> https://devel.rtems.org/ticket/3696 ]
>
> > The objective of the project is to convert the trace data into CTF. The
> trace
> > data is already generated by the system. All that is left is to convert
> the
> > trace data into CTF. I am interested in CTF because I want to send it to
> trace
> > compass for analysis.
>
> > Any idea how can I achieve this?
>
> If you intend to produce CTF traces natively from the target, you will
> want to
> look into the barectf project [1].
>
> However, if your goal is to do a post-processing phase to convert traces
> from
> some existing format to CTF, you will want to look into the Babeltrace
> project [2]
> master branch which is in preparation for Babeltrace 2.0. The approach here
> would be to create a Babeltrace 2 source plugin which reads your trace
> format into
> the Babeltrace 2 intermediate representation by using the APIs exposed to
> plugins by Babeltrace 2. Babeltrace 2 has a generic CTF sink which can
> serialize
> the resulting trace intermediate representation into CTF.
>
> Thanks,
>
> Mathieu
>
> [1] https://github.com/efficios/barectf
> [2] https://diamon.org/babeltrace/
>
> Thanks, Mathieu for the approach. I am trying to use the babeltrace and I
read its documentation and but I nowhere found the examples of conversion
from one format to CTF.

The examples would make it more clear.

Is it possible to convert the live trace stream into CTF stream with the
current babeltrace?

Thanks






-- 
*Ravindra Kumar Meena*,
B. Tech. Computer Science and Engineering,
Indian Institute of Technology (Indian School of Mines)
<https://www.iitism.ac.in/>, Dhanbad
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[lttng-dev] Need help in converting trace data into CTF

[Mathieu Desnoyers]

----- On May 29, 2019, at 12:19 PM, Ravindra Kumar Meena <rmeena840 at gmail.com> wrote: 

> On Fri, May 17, 2019 at 12:22 AM Mathieu Desnoyers < [
> mailto:mathieu.desnoyers at efficios.com | mathieu.desnoyers at efficios.com ] >
> wrote:

>> ----- On May 16, 2019, at 1:42 AM, Ravindra Kumar Meena [
>> mailto:rmeena840 at gmail.com | rmeena840 at gmail.com ] wrote:

>> > Hi LTTng developers,
>> > I have been selected at GSoC 2019 with organization RTEMs. My project is [
>>> [ https://devel.rtems.org/ticket/3696 | https://devel.rtems.org/ticket/3696 ] |
>> > [ https://devel.rtems.org/ticket/3696 | https://devel.rtems.org/ticket/3696 ] ]

>> > The objective of the project is to convert the trace data into CTF. The trace
>> > data is already generated by the system. All that is left is to convert the
>> > trace data into CTF. I am interested in CTF because I want to send it to trace
>> > compass for analysis.

>> > Any idea how can I achieve this?

>> If you intend to produce CTF traces natively from the target, you will want to
>> look into the barectf project [1].

>> However, if your goal is to do a post-processing phase to convert traces from
>> some existing format to CTF, you will want to look into the Babeltrace project
>> [2]
>> master branch which is in preparation for Babeltrace 2.0. The approach here
>> would be to create a Babeltrace 2 source plugin which reads your trace format
>> into
>> the Babeltrace 2 intermediate representation by using the APIs exposed to
>> plugins by Babeltrace 2. Babeltrace 2 has a generic CTF sink which can serialize
>> the resulting trace intermediate representation into CTF.

>> Thanks,

>> Mathieu

>> [1] [ https://github.com/efficios/barectf | https://github.com/efficios/barectf
>> ]
>> [2] [ https://diamon.org/babeltrace/ | https://diamon.org/babeltrace/ ]

> Thanks, Mathieu for the approach. I am trying to use the babeltrace and I read
> its documentation and but I nowhere found the examples of conversion from one
> format to CTF.

> The examples would make it more clear.

> Is it possible to convert the live trace stream into CTF stream with the current
> babeltrace?

With babeltrace 1.5.x: No. 

With babeltrace master branch (currently in -pre stage before 2.0): Yes. 

Thanks, 

Mathieu 

> Thanks

> --
> Ravindra Kumar Meena ,
> B. Tech. Computer Science and Engineering,
> [ https://www.iitism.ac.in/ | Indian Institute of Technology (Indian School of
> Mines) ] , Dhanbad

-- 
Mathieu Desnoyers 
EfficiOS Inc. 
http://www.efficios.com 
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[lttng-dev] Need help in converting trace data into CTF

[Ravindra Kumar Meena]

>
> With babeltrace 1.5.x: No.
>

Okay

>
>
> With babeltrace master branch (currently in -pre stage before 2.0): Yes.
>
Okay. That's great!!
Are there examples available on it?

Can the conversion be done directly via command-line?

Thanks




-- 
*Ravindra Kumar Meena*,
B. Tech. Computer Science and Engineering,
Indian Institute of Technology (Indian School of Mines)
<https://www.iitism.ac.in/>, Dhanbad
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