From mboxrd@z Thu Jan 1 00:00:00 1970 From: mathieu.desnoyers@efficios.com (Mathieu Desnoyers) Date: Tue, 16 Apr 2019 13:46:05 -0400 (EDT) Subject: [lttng-dev] unable to profile example In-Reply-To: References: Message-ID: <1864353373.2210.1555436765140.JavaMail.zimbra@efficios.com> ----- On Apr 16, 2019, at 11:34 AM, Luis Ayuso luis.f.ayuso at gmail.com wrote: > Dear Lttng community. > I tried to profile the example code, as described in the documentation @ [ > https://lttng.org/docs/v2.10 | https://lttng.org/docs/v2.10 ] > and I could not get any satisfactory result. > I am using > - lttng (LTTng Trace Control) 2.10.2 - KeKriek > - Ubuntu 18.04.2 > I created the files hello-tp.c hello-tp.h hello.c as described in the > documentation > The code succesfully compiles. > Kernel modules are loaded. > lttng-sessiond --daemonize runs with not acknowledgement. > nevertheless, lttng create session command returns an error I am unable to > justify: > lttng create test > Session test created. > Traces will be written in /home/luis/lttng-traces/test-20190416-173219 > Error: Unable to create config file > Error: Command error > - Do I need any extra setup step that is no documented in the web? > - Is the package at ubuntu repos working correctly? > - are there known conflicts with any other software This message appears when lttng fails to create either: - $LTTNG_HOME/.lttngrc (if the LTTNG_HOME environment variable is set), or - $HOME/.lttngrc otherwise. Please double-check the content of those environment variables and access rights to the directories they lead to. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com