On Thu, 16 Jan 2025 15:49:26 +0100
Tomas Glozar [off-list ref] wrote:

In the future, two more patchsets will be sent: one to display how many
events/samples were dropped (either left in tracefs buffer or by buffer
overflow), one to improve sample processing performance to be on par with
cyclictest (ideally) so that samples are not dropped in the cases mentioned
in the beginning of the email.

Hmm, I wonder if timerlat can handle per cpu data, then you could kick off
a thread per CPU (or a set of CPUs) where the thread is responsible for
handling the data.


		CPU_ZERO_S(cpu_size, cpusetp);
		CPU_SET_S(cpu, cpu_size, cpusetp);
                retval = tracefs_iterate_raw_events(trace->tep,
                                trace->inst,
                                cpusetp,
                                cpu_size,
                                collect_registered_events,
                                                    trace);

And then that iteration will only read over a subset of CPUs. Each thread
can do a different subset and then it should be able to keep up.

-- Steve