[lttng-dev] Can't get any event output from the demo exe

[Mathieu Desnoyers]

----- Original Message -----
> Hi Jonathan,
>  
> as I'm struggling with the Internet style response I'll recap it here
>  
> > On session creation you can use -o to specify an output PATH.
> Have tried to redirect to /tmp but no output there as well
>  
> > Did you build from source or you got binary from a package manager ?
> yes, via git clone etc.
>  
> > What do you mean by talk to it?
> I see daemon logs in response to the lttng commands. The exception is
> that there is no reaction for the demo-trace run.

I see that UST debug tells us this:

"libust[5389/5391]: Info: sessiond not accepting connections to local apps
socket (in ust_listener_thread() at lttng-ust-comm.c:1221)"

and also for global apps socket.

So it means UST cannot talk to the session daemon.

Are you UST and sessiond versions compatible ? The output of
lttng-sessiond -vvv should help us understand why UST cannot
connect to it.

Thanks,

Mathieu


>  
> > Any particuliar reason to do an export LD_LIBRARY_PATH?
> Ok, is no longer needed.
>  
> I've added the sleep but provider output is still like in my original post.
>  
> Below the steps I run again. Is it possible to get more info from the
> demo-trace provider? Is the marked line ok?
>  
> thanks
> Wolfgang R.
>  
>  
> row at cobra7:~$ lsb_release -sd
> Ubuntu 14.04.1 LTS
> 
> row at cobra7:~$ file /sbin/init
> /sbin/init: ELF 32-bit LSB  shared object, Intel 80386, version 1 (SYSV),
> dynamically linked (uses shared libs), for GNU/Linux 2.6.24,
> BuildID[sha1]=c394677bccc720a3bb4f4c42a48e008ff33e39b1, stripped
> => 32bit
> 
> 
> row at cobra7:~$ lttng-sessiond -vvv
> ...
> 
> row at cobra7:~/lttng_source/lttng-ust/doc/examples/demo$ export
> LTTNG_UST_DEBUG=1
> row at cobra7:~/lttng_source/lttng-ust/doc/examples/demo$ lttng create
> Session auto-20150317-075322 created.
> Traces will be written in
> /home/local/ESG_GMBH/row/lttng-traces/auto-20150317-075322
> ####### not found
> row at cobra7:~/lttng_source/lttng-ust/doc/examples/demo$ lttng enable-event -u
> -a
> All UST events are enabled in channel channel0
> 
> row at cobra7:~$ ps -aux | grep ltt
> root      4664  0.0  0.0  84416  3376 ?        Ssl  07:51   0:00
> lttng-sessiond
> row       4683  0.0  0.1  76220 13788 pts/1    Sl+  07:52   0:00
> lttng-sessiond -vvv
> row       4709  0.0  0.0  56096   672 pts/1    Sl+  07:53   0:00
> lttng-consumerd --quiet -u --consumerd-cmd-sock
> /home/local/ESG_GMBH/row/.lttng/ustconsumerd32/command --consumerd-err-sock
> /home/local/ESG_GMBH/row/.lttng/ustconsumerd32/error --group tracing
> 
> row at cobra7:~/lttng_source/lttng-ust/doc/examples/demo$ lttng start
> Tracing started for session auto-20150317-075322
> 
> row at cobra7:~/lttng_source/lttng-ust/doc/examples/demo$ ./demo-trace
> liblttng_ust_tracepoint[5381/5381]: just registered a tracepoints section
> from 0xb7589780 and having 2 tracepoints (in tracepoint_register_lib() at
> tracepoint.c:767)
> ...
> libust[5389/5390]: Info: sessiond not accepting connections to global apps
> socket (in ust_listener_thread() at lttng-ust-comm.c:1221)
> #########  is this OK ?
> libust[5389/5390]: Waiting for global apps sessiond (in wait_for_sessiond()
> at lttng-ust-comm.c:1132)
> libust[5389/5391]: Info: sessiond not accepting connections to local apps
> socket (in ust_listener_thread() at lttng-ust-comm.c:1221)
> #########  is this OK ?
> libust[5389/5391]: Waiting for local apps sessiond (in wait_for_sessiond() at
> lttng-ust-comm.c:1132)
> libust[5389/5389]: Provider "lttng_ust_tracef" accepted, version 1.0 is
> compatible with LTTng UST provider version 1.0. (in check_provider_version()
> at lttng-
> ...
> 
> 
> row at cobra7:~$ lttng list  -u
> UST events:
> -------------
> None
>  
>  
> 
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> 

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com