On 2025-06-06 10:37, David Aldrich wrote:
Hi Mathieu

Indeed, You will also need to enable something like this:

lttng enable-event --userspace 'lttng_ust_cyg_profile:*'

See "man 3 lttng-ust-cyg-profile" for details.

Thanks for this. I used your suggested command and can now see the
Flame Chart (Incubator). However, I only see symbol addresses, not the
actual symbolic names.

I compile with:

-O3 -pg -finstrument-functions

Do I need any other compiler/linker options to resolve the symbol names?

Yes. Resolving addresses to symbol names requires to know the
base addresses where the executable mappings are loaded.

See:

man 7 babeltrace2-filter.lttng-utils.debug-info

for a detailed explanation about what needs to be enabled.

Thanks,

Mathieu



Best regards
David


--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com

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