[lttng-dev] Help-lttng-ust-pyhton
Yves Junior Bationo
yves-junior.bationo at polymtl.ca
Wed Nov 25 11:29:49 EST 2015
Hi,
i finaly found the solution of my problem
First in the exemple of the documentation
(https://lttng.org/docs/#doc-python-application),
we must add "logging.basicConfig()" to handle the log (or other handler)
As lttng UST python doesn't work when installing from ppa repository
download bash script (from http://paste.ubuntu.com/10816886/) and
replace (line 18) by "./configure --enable-python-agent" for lttng-ust
compilation
install and enjoy
THKS.
Yves Junior Bationo <yves-junior.bationo at polymtl.ca> a écrit :
> Hi,
> with 'lttng enable-event -p -a' nothing is returned too.
> ok i will wait for the problem to be fixed
> THKs!
>
> Jonathan Rajotte <jonathan.r.julien at gmail.com> a écrit :
>
>> Hi Yves,
>>
>> You might want to enable all the python events via
>> 'lttng enable-event -p -a'.
>>
>> Cheers!
>>
>> On Fri, Nov 13, 2015 at 10:46 AM, Yves Junior Bationo <
>> yves-junior.bationo at polymtl.ca> wrote:
>>
>>> Hi,
>>> Adding "logging.basicConfig()" seems to work well. "lttng list -u -a"
>>> return the list of all python log
>>> BUT
>>> after enabling all event trace (lttng enable-event -u -a)
>>> the trace contain only "lttng_ust_statedump" event, and not a single
>>> event from the script (warning,error... )
>>> THKs!
>>> Yves
>>>
>>> Jonathan Rajotte Julien <Jonathan.rajotte-julien at efficios.com> a écrit :
>>>
>>>
>>> Hi Yves,
>>>>
>>>> We are currently looking a little bit more into it. It might be an error
>>>> in the documentation.
>>>>
>>>> The example report the same error without the 'import lttngust'. If you
>>>> use python 3 it seems to work.
>>>>
>>>> This seems related to the logging.basicConfig() which provide as basic
>>>> configuration for the root handler. See [1] for more info.
>>>>
>>>> For now you can simply add the logging.basicConfig() before everything.
>>>> I'm not sure if this is a workaround or simply how logging in python
>>>> works in general.
>>>>
>>>> Cheers!
>>>>
>>>> [1] https://docs.python.org/2/library/logging.html#logging.basicConfig
>>>>
>>>> On 2015-11-12 01:21 PM, Yves Junior Bationo wrote:
>>>>
>>>>> I installed liblttng-ust-dev from ppa:lttng/ppa
>>>>> lttng version: (LTTng Trace Control) 2.7.0 - Herbe à Détourne
>>>>>
>>>>> Yves Junior Bationo <yves-junior.bationo at polymtl.ca> a écrit :
>>>>>
>>>>> 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
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> lttng-dev mailing list
>>>>> lttng-dev at lists.lttng.org
>>>>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>>>>
>>>>
>>>> --
>>>> Jonathan R. Julien
>>>> Efficios
>>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> lttng-dev mailing list
>>> lttng-dev at lists.lttng.org
>>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>>
>>
>>
>>
>> --
>> Jonathan Rajotte Julien
>
>
>
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