[lttng-dev] Viewing userspace apps traces

[Paul Chavent]

Thank you very much for handling this point.

On 10/05/2012 02:15 PM, Bernd Hufmann wrote:
> Hi Paul
>
> I was trying your trace with the Eclipse Juno SR1 CDT EPP and you're
> right the context information is not displayed in the Events Table
> (I'm not talking about the Time Graph and its table).
> I was verifying the commits and the commit that added the support for
> displaying of context information in the Events Table is in the
> release. As well as the example trace with context
> information I generated and tested with works. However, it was a
> Kernel trace with context information and not a UST trace.
>
> So, that needs to be investigated on our side (Eclipse developer) why
> the context information is not shown for the UST trace. We'll let you
> know.
>
> Best Regard
> Bernd
>
> On Thu, Oct 4, 2012 at 4:39 PM, Paul Chavent <paul.chavent at fnac.net> wrote:
>> Hi,
>>
>> I've follow this link
>> (http://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/juno/SR1/eclipse-cpp-juno-SR1-linux-gtk-x86_64.tar.gz)
>> to download the Eclipse env.
>>
>> Here is the version notes i can give you :
>> **************
>> Eclipse
>> Version: Juno Release
>> Build id: 20120614-1722
>>
>> Eclipse Linux Tools LTTng ... 1.0.0.201206130106
>> **************
>>
>> Then i've got my traces with :
>>
>> lttng create
>> lttng enable-event -u -a
>> lttng add-context -u -t vpid -t vtid
>> lttng start
>> ...
>> lttng stop
>> lttng destroy
>>
>> Here is a sample of the traces :
>> http://paul.chavent.free.fr/tmp/sample_traces.tar.bz2
>>
>>
>> I can open the traces in eclipse (i see the "Events" panel), but i can't see
>> the events ordered by pid/tid in the "Time Chart" panel, neither "Control
>> Flow", nor "Ressources" ...)
>>
>> Is it possible to have the traces displayed sorted by tid for instance ?
>>
>> Thanks.
>>
>> Paul.
>>
>>
>>
>> On 10/04/2012 03:40 PM, eamcs/eedbhu wrote:
>>>
>>> Hi Paul
>>>
>>> The Eclipse Linux Tools release v1.1.1 (which is also included in the CDT
>>> EPP Juno SR1 release) contains an update that displays CTF context
>>> information in the events table.
>>> So you should be able to see the context information.
>>>
>>> Best Regards
>>> Bernd
>>>
>>>
>>> On 10/03/2012 11:41 PM, Alexandre Montplaisir wrote:
>>>>
>>>> Sorry for the late reply, I had to update/rebase some of the stuff
>>>> first...
>>>>
>>>> (Cross-posting linuxtools-dev, as it might interest some people who
>>>> follow that list too. This is about extending TMF to implement a
>>>> graphical view for a specific UST trace type.)
>>>>
>>>>
>>>> On 12-10-03 01:50 AM, Paul Chavent wrote:
>>>>>
>>>>> [...]
>>>>>
>>>>> On 10/02/2012 10:29 PM, Alexandre Montplaisir wrote:
>>>>>>
>>>>>> [...]
>>>>>>
>>>>>> What would you like see in your "timeline representation" exactly?
>>>>>> Maybe
>>>>>> we could give you some pointers as to how to implement such a view.
>>>>>> (We're currently working on making it easy to extend the framework to
>>>>>> implement new views, so this could be a good exercise!)
>>>>>
>>>>> I would like to see, eg, one line per tid, and on each line, the value
>>>>> of one context or argument value.
>>>>>
>>>>> I'm ready to follow an exercise for extending the framework !
>>>>
>>>> Ok good! We don't have a nice tutorial ready yet, as most parts are
>>>> still working their way upstream. But if you want to dig into it and try
>>>> it out now, you can:
>>>>
>>>> 1 - Set up the development environment for TMF:
>>>>
>>>> http://wiki.eclipse.org/Linux_Tools_Project/LTTng_Eclipse_Plug-in_Development_Environement_Setup
>>>>
>>>> 2 - Checkout the "lttng-kepler" branch in the git. This is where the
>>>> latest development happens.
>>>>
>>>> 3 - Apply those two patches, in that order:
>>>> https://git.eclipse.org/r/#/c/7747/
>>>> https://git.eclipse.org/r/#/c/7748/
>>>> (you can copy-paste the "cherry-pick" command shown on the page)
>>>>
>>>> 4 - Download the example program and view from:
>>>> git://git.dorsal.polymtl.ca/~alexmont/ust-example.git
>>>>
>>>> Now at this point you should be able to import and build the example
>>>> plugins (ust.example.core and ust.example.ui) and the TMF/LTTng ones in
>>>> the same workspace.
>>>>
>>>> You can try it to make sure it works correctly : take a UST trace of the
>>>> "myprog" program, and then load it into TMF, and show the "Example ->
>>>> Connections" view. It should display the yellow and green rectangles
>>>> corresponding to the states that were defined.
>>>>
>>>>
>>>> After that, it shouldn't be too hard (famous last words...) to rework
>>>> the ust.example.* code to fit your application. The points of interest
>>>> will be (before renames):
>>>>
>>>> MyUstTraceInput, line 85+: This is where you assign your trace events to
>>>> states
>>>> ConnectionsPresentationProvider, line 31-34: This is where you assign
>>>> the colors to each state in the view
>>>> and same file, lines 64-68 and 81-85 : This is where you assign the
>>>> trace's states to the ones in the view.
>>>> (one place is for the actual colored rectangle, the other is for the
>>>> tooltips, iirc).
>>>>
>>>>
>>>> If you have any question or problem, please let me know!
>>>>
>>>> Good luck ;)
>>>>
>>>
>>
>>
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