[lttng-dev] Issue faced in logging the traces

[Vivek Kumar]

Hi David,

Thanks for the response. LTTng-ust is also ported.
Please find attached the PPT where I have taken the snaps and described the
issue faced.
At present I am trying to port and instrument LTTng for userspace only.

My SoC is ARM-Cortex A9 from Mindspeed and the os is openWRT Linux.

LTTng doesn't report any issue when I run it to instrument in userspace but
CTF is not logged in the Home directory, please take a look to the
powerpoint slides for descriptions and commands that I give.

Regards, Vivek



On Fri, Feb 15, 2013 at 7:59 PM, David Goulet <dgoulet at efficios.com> wrote:

> Hi Vivek,
>
> In order to collect a trace you need to instrument your application with
> LTTng-UST tracepoints.
>
> If you like to gather the syscalls for instance, you need to install the
> LTTng modules and start your session daemon as root.
>
> If you are still experiencing problem, please provide the commands you
> use and setup.
>
> Thanks!
> David
>
> Vivek Kumar:
> > Hi,
> >
> > I am trying to port LTTng to my arm based board.
> > For userspace tracing, I have been able to successfully port followings:
> > LTTng-tools,
> > LTT-ust Library
> > Userspace-rcu
> > libpopt
> >
> > Now I can see that lttng-sessiond is running, and am able to create
> > sessions, enable-event and start and stop tracing.
> > But, I don't see traces be logged in the home directory (indeed nothing
> > happens, i.e, not even the creation of the base directory ->
> lttng-traces).
> > Am I missing anything because of that LTTng is failing to log traces?
> > Please help.
> >
> > Regards, Vivek
> >
> >
> > --
> > Best, Vivek
> >
> >
> > This body part will be downloaded on demand.
>



-- 
Best, Vivek
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