Can you start the lttng-sessiond in verbose mode using the following command: > lttng-sessiond -vvv and then do the lttng create, start of application and lttng view on another console.
Then copy the output of the sessiond on https://pastebin.com/ and send us the link. Thank you, Francis Le ven. 15 févr. 2019, à 14 h 36, Mosleh Uddin <mosleh1...@gmail.com> a écrit : > That's correct, I don't enable any events or do: lttng start. > Here is some snapshots of starting everything up, followed by starting my > application. > [image: image.png] > > Here are the outputs for the commands: > > [image: image.png] > > [image: image.png] > > [image: image.png] > > Note that even though the session is inactive, when a trace event occurs > in my application it is being recorded in the appropriate directory: > > [image: image.png] > > Also maybe important, the system has root only user. Would having the > application belonging to a different user and trying to run as root cause > these kinds of complications? I did notice when testing on a raspberry pi > that running an application as a root user would mean running sessions as > root user as well. > > Thanks, > Mosleh > > On Fri, Feb 15, 2019 at 11:55 AM Francis Deslauriers < > francis.deslauri...@efficios.com> wrote: > >> Adding back lttng-dev mailing list. >> >> So you don't even run a lttng-enable-event command? >> That's odd. >> >> Can you send us the output of the following commands: >> Is it possible that there are other lttng-sessiond daemons running on >> the machine? >> > ps aux | grep "lttng-sessiond" >> Verify if there are other active tracing sessions: >> > lttng list >> Check the details of the current session: >> > lttng status >> >> Thank you, >> Francis >> >> Le ven. 15 févr. 2019, à 11 h 29, Mosleh Uddin <mosleh1...@gmail.com> a >> écrit : >> > >> > Hi Francis, >> > >> > Thank you for the quick response. >> > Just to clear things up, my application is running when I run that >> command. >> > >> > The commands I am running are: >> > > lttng-sessiond -d >> > > lttng create my-sess --live >> > After this command I start my application. If I then do the command: >> > > lttng view >> > I will see the tracepoints in the application in the terminal even >> though I have not done: lttng start. >> > >> > I thought it was strange that I cannot find my application in the: >> lttng list command under any domain. >> > Also the reason I start my application after creating a session is >> because the system automatically starts the application using systemd, >> > in order to get tracing data at all I have to manually stop the >> application and start it again after creating a session. >> > >> > Thanks again for any help, >> > Mosleh >> > >> > On Fri, Feb 15, 2019 at 10:32 AM Francis Deslauriers < >> francis.deslauri...@efficios.com> wrote: >> >> >> >> Hi Mosleh, >> >> It's expected to not see any event when running lttng list -u if no >> >> lttng-ust instrumented applications are running. >> >> >> >> What are the exact lttng commands you are running to see those >> >> unexpected events? >> >> >> >> Thank you, >> >> Francis >> >> >> >> >> >> Le ven. 15 févr. 2019, à 10 h 08, Mosleh Uddin <mosleh1...@gmail.com> >> a écrit : >> >> > >> >> > Hello, >> >> > >> >> > I am having a strange issue with my current application. For some >> context, I have integrated LTTng into a Yocto build and put custom trace >> points in my embedded system application. Once I load the built image onto >> my system and start a session daemon, I try to list all available userspace >> events (using lttng list -u), but no events show up. >> >> > >> >> > The strange occurrence is when I create a session (lltng create >> my-sess) and not start tracing the trace events will display on the screen >> regardless (when starting session in live mode with lttng view). I was >> wondering if anyone has any insight on this issue I am having. >> >> > >> >> > Thanks for any assistance, >> >> > Mosleh >> >> > _______________________________________________ >> >> > lttng-dev mailing list >> >> > lttng-dev@lists.lttng.org >> >> > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev >> >> >> >> -- >> >> Francis Deslauriers >> >> Computer Engineer >> >> EfficiOS inc. >> >> >> >> -- >> Francis Deslauriers >> Computer Engineer >> EfficiOS inc. >> > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > -- Francis Deslauriers Computer Engineer EfficiOS inc.
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