[lttng-dev] Lttng: display active threads in multiple cores.

Zvi Vered veredz72 at gmail.com
Fri Mar 29 01:09:16 EDT 2024


Hi Christopher,

Thank you very much for your reply.
Can you please explain what do you mean by ftrace-enabled kernel ?

Best regards,
Zvika

On Wed, Mar 27, 2024 at 7:32 PM Christopher Harvey via lttng-dev <
lttng-dev at lists.lttng.org> wrote:

> you can use an ftrace-enabled kernel with lttng (maybe even just
> tracecompass) or perfetto to get that kind of trace
>
>
> https://archive.eclipse.org/tracecompass.incubator/doc/org.eclipse.tracecompass.incubator.ftrace.doc.user/User-Guide.html
>
> or
>
> https://ui.perfetto.dev/
>
> On Wed, Mar 27, 2024, at 5:26 AM, Zvi Vered via lttng-dev wrote:
> > Hello,
> >
> > I have an application with 4 threads.
> > I'm required to display on the graph when thread starts working till it
> > blocks for the next semaphore.
> >
> > But without using the lttng userspace library.
> >
> > Is it possible ?
> >
> > Thank you,
> > Zvika
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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