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. >
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