Hi Mathue, Thanks for the quick reply,
After inserting lttng modules , I had given the command "arm-none-linux-gnueabi-lttng-sessiond -vvv" as you said, Below is the output where there are error messages. Please help me in resolving the issue, SO that I can catch kernel and user traces. root@arago:/usr/lttng/modules# arm-none-linux-gnueabi-lttng-sessiond -d root@arago:/usr/lttng/modules# arm-none-linux-gnueabi-lttng-sessiond -vvv DEBUG3: Creating LTTng run directory: /var/run/lttng [in create_lttng_rundir() at main.c:4315] DEBUG2: Kernel consumer err path: /var/run/lttng/kconsumerd/error [in main() at main.c:4543] DEBUG2: Kernel consumer cmd path: /var/run/lttng/kconsumerd/command [in main() at main.c:4545] DEBUG1: Client socket path /var/run/lttng/client-lttng-sessiond [in main() at main.c:4592] DEBUG1: Application socket path /var/run/lttng/apps-lttng-sessiond [in main() at main.c:4593] DEBUG1: LTTng run directory path: /var/run/lttng [in main() at main.c:4594] DEBUG2: UST consumer 32 bits err path: /var/run/lttng/ustconsumerd32/error [in main() at main.c:4603] DEBUG2: UST consumer 32 bits cmd path: /var/run/lttng/ustconsumerd32/command [in main() at main.c:4605] DEBUG2: UST consumer 64 bits err path: /var/run/lttng/ustconsumerd64/error [in main() at main.c:4614] DEBUG2: UST consumer 64 bits cmd path: /var/run/lttng/ustconsumerd64/command [in main() at main.c:4616] Error: Already running daemon. Thanks in advance, Pavan -----Original Message----- From: Mathieu Desnoyers [mailto:[email protected]] Sent: Friday, June 08, 2012 11:12 PM To: Pavan Anumula Cc: [email protected] Subject: Re: [lttng-dev] Lttng start failed * Pavan Anumula ([email protected]) wrote: > Hi , > > I am new to LTTng usage, I am trying to use LTTng 2.0.1 and > LTTng-modules-2.0.2 for ARM(omapL138), with Linux kernel 2.6.33 wit RT-29 > patch on it. > > After enabling all the kernel events I am facing the below errors. I loaded > all the modules manually by insmod. > > > > root@arago:~/lttng-traces# arm-none-linux-gnueabi-lttng create > newsessiom Session newsessiom created. > Traces will be written in > /home/root/lttng-traces/newsessiom-20110325-154922 > > root@arago:~/lttng-traces# arm-none-linux-gnueabi-lttng enable-event > -a --kernel All kernel events are enabled in channel channel0 > > root@arago:~/lttng-traces# arm-none-linux-gnueabi-lttng start > LTTng: Failure to write metadata to buffers (timeout) > Error: Starting kernel trace failed > > Please kindly help me on this. I think you should look into the lttng-sessiond --help : --consumerd32-path PATH Specify path for the 32-bit UST consumer daemon binary --consumerd32-libdir PATH Specify path for the 32-bit UST consumer daemon libraries --consumerd64-path PATH Specify path for the 64-bit UST consumer daemon binary --consumerd64-libdir PATH Specify path for the 64-bit UST consumer daemon libraries options. My guess is that lttng-sessiond is not able to find the consumerd binary files, maybe due to a rename or because they have been moved after install. One more thing that might help is to launch the lttng-sessiond with "-vvv" : it will provide verbose output and let us know where things fall apart. Thanks, Mathieu > > > Thanks in advance, > Pavan > > ________________________________ > SASKEN BUSINESS DISCLAIMER: This message may contain confidential, > proprietary or legally privileged information. In case you are not the > original intended Recipient of the message, you must not, directly or > indirectly, use, disclose, distribute, print, or copy any part of this > message and you are requested to delete it and inform the sender. Any views > expressed in this message are those of the individual sender unless otherwise > stated. Nothing contained in this message shall be construed as an offer or > acceptance of any offer by Sasken Communication Technologies Limited > ("Sasken") unless sent with that express intent and with due authority of > Sasken. Sasken has taken enough precautions to prevent the spread of viruses. > However the company accepts no liability for any damage caused by any virus > transmitted by this email. > Read Disclaimer at http://www.sasken.com/extras/mail_disclaimer.html > _______________________________________________ > lttng-dev mailing list > [email protected] > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
