Hi Bala,
On 2023-07-31 07:01, Bala Gundeboina via lttng-dev wrote:
Hi all,
I are working in a Ti project, I already installed LTTng and i
am able to trace userspace.I have a doubt regarding profiling areas of
LTTng. In the project we are using ISP and RGB gstreamer. *can we
profile exactly how much time taken by ISP and RGB gstreamer to process
each frames* by using LTTng userspace tracing.
If the work being done to process each frame is being done via library
calls, it would be possible to use a custom userspace tracing helper
which instruments the necessary function calls, similar to those found
[here][1] which are loaded via LD_PRELOAD.
Otherwise you will need to modify and recompile your application to [add
tracepoints][2], or use a tool that does dynamic profiling.
i want to know is this
possible to profile by LTTng, what are the supported profiling areas and
peripherals of LTTng, Sorry if any grammatical mistakes made.
It is possible to add static (user-defined) instrumentation to
applications using [liblttng-ust][3] in C/C++. [Helpers][4] are also
available for Java (JUL/Log4j) and Python applications.
Tracing of the linux kernel and various system information is possible
with kernel modules provided by [lttng-modules][5].
[1]: https://lttng.org/docs/v2.13/#doc-prebuilt-ust-helpers
[2]: https://lttng.org/docs/v2.13/#doc-c-application
[3]: https://lttng.org/docs/v2.13/#doc-lttng-ust
[4]: https://lttng.org/docs/v2.13/#doc-lttng-ust-agents
[5]: https://lttng.org/docs/v2.13/#doc-lttng-modules
thanks,
kienan
Thanks & Regards
Bala Gundeboina
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