[lttng-dev] Help-lttng-ust-pyhton

[Yves Junior Bationo]

Hi, i my script i just change "my-logger" by "hello-logger" (hello.py  
in attachment).
I try to figure out the probem by
		export LTTNG_UST_PYTHON_DEBUG=1
and i found this:
#####
[0.019155] LTTng-UST debug: <module>(): debug is enabled
[0.024447] LTTng-UST debug: _init_threads(): entering
[0.024710] LTTng-UST debug: _get_port_from_file(): reading port from  
file "/var/run/lttng/agent.port"
[0.025745] LTTng-UST debug: _get_port_from_file(): reading port from  
file "/root/.lttng/agent.port"
[0.025942] LTTng-UST debug: _init_threads(): system session daemon port: 5345
[0.026117] LTTng-UST debug: _init_threads(): user session daemon port: None
[0.026280] LTTng-UST debug: _init_threads(): creating system client thread
[0.026762] LTTng-UST debug: _init_threads(): created and started  
system client thread
[0.026973] LTTng-UST debug: _init_threads(): waiting for registration  
done (expecting 1, timeout is 5.0 s)
[0.027721] LTTng-UST debug: _client_thread_target(): creating client  
"system" using TCP port 5345
[0.029745] LTTng-UST debug: _client_thread_target(): starting client "system"
[0.029896] LTTng-UST debug: run(): client "system": connecting to  
session daemon
[0.030117] LTTng-UST debug: run(): client "system": registering to  
session daemon
[0.030370] LTTng-UST debug: _recv_server_cmd_header(): client  
"system": received empty server command header
[0.030532] LTTng-UST debug: _handle_server_cmd(): client "system": bad  
server command
[0.030667] LTTng-UST debug: run(): client "system": got exception:  
'module' object has no attribute '_ClientCmdReply'
####
You can see 'bad server command' and 'exception' in the last lines.

Jérémie Galarneau <jeremie.galarneau at efficios.com> a écrit :

> 2015-11-06 17:59 GMT-05:00 Yves Junior Bationo  
> <yves-junior.bationo at polymtl.ca>:
>>
>> j'ai un souci avec lltngust pour les application python
>> Pour l'exemple de la Doc
>>         https://lttng.org/docs/#doc-python-application
>> j'ai l'erreur:
>>         No handlers could be found for logger "hello-logger"
>>
>
> Hi Yves,
>
> We try to stick to English on this mailing list so the questions and
> answers remain easily searchable.
>
> The example in the docs uses "time" without importing it, I have sent
> a Pull Request to address that.
> However, addressing the problem you are encountering, where does
> "hello-logger" come from?
>
> Can you post the code and versions of the components you are using?
>
> Thanks,
> Jérémie
>
>
>> la commande "lttng list -u -a" me retourne bien la liste des trace point:
>>
>>         PID: 5228 - Name: python
>>       lttng_python:event (loglevel: TRACE_DEBUG_LINE (13)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG (loglevel: TRACE_DEBUG (14)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_LINE (loglevel: TRACE_DEBUG_LINE (13))
>> (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_FUNCTION (loglevel:
>> TRACE_DEBUG_FUNCTION (12)) (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_UNIT (loglevel: TRACE_DEBUG_UNIT (11))
>> (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_MODULE (loglevel: TRACE_DEBUG_MODULE
>> (10)) (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_PROCESS (loglevel: TRACE_DEBUG_PROCESS
>> (9)) (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_PROGRAM (loglevel: TRACE_DEBUG_PROGRAM
>> (8)) (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_DEBUG_SYSTEM (loglevel: TRACE_DEBUG_SYSTEM
>> (7)) (type: tracepoint)
>>       lttng_ust_tracelog:TRACE_INFO (loglevel: TRACE_INFO (6)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_NOTICE (loglevel: TRACE_NOTICE (5)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_WARNING (loglevel: TRACE_WARNING (4)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_ERR (loglevel: TRACE_ERR (3)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_CRIT (loglevel: TRACE_CRIT (2)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_ALERT (loglevel: TRACE_ALERT (1)) (type:
>> tracepoint)
>>       lttng_ust_tracelog:TRACE_EMERG (loglevel: TRACE_EMERG (0)) (type:
>> tracepoint)
>>       lttng_ust_tracef:event (loglevel: TRACE_DEBUG (14)) (type: tracepoint)
>>       lttng_ust_statedump:end (loglevel: TRACE_DEBUG_LINE (13)) (type:
>> tracepoint)
>>       lttng_ust_statedump:debug_link (loglevel: TRACE_DEBUG_LINE (13))
>> (type: tracepoint)
>>       lttng_ust_statedump:build_id (loglevel: TRACE_DEBUG_LINE (13)) (type:
>> tracepoint)
>>       lttng_ust_statedump:soinfo (loglevel: TRACE_DEBUG_LINE (13)) (type:
>> tracepoint)
>>       lttng_ust_statedump:start (loglevel: TRACE_DEBUG_LINE (13)) (type:
>> tracepoint)
>>
>> Mais pas de resultats dans le repertoire des evenements lorsque j'active le
>> tracage lttng.
>>
>> Resumé
>>         Probleme 1 :No handlers could be found for logger
>>                 je croyais que "import lttngust" devait gerer cette
>> situation
>>
>>         Probleme 2: pas de resultats au tracage
>> Merci.
>>
>>
>>
>>
>>
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev at lists.lttng.org
>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>
>
> --
> Jérémie Galarneau
> EfficiOS Inc.
> http://www.efficios.com

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