Re: [PATCH v3 00/46] Fix perf on Intel hybrid CPUs

[Ian Rogers]

On Mon, May 1, 2023 at 1:35 PM Liang, Kan <kan.liang@xxxxxxxxxxxxxxx> wrote:
>
>
>
> On 2023-04-29 1:34 a.m., Ian Rogers wrote:
> > Sample output is contained in the v1 patch set:
> > https://lore.kernel.org/lkml/bff481ba-e60a-763f-0aa0-3ee53302c480@xxxxxxxxxxxxxxx/
> >
> > Tested on Tigerlake, Skylake and Alderlake CPUs.
>
> The metrics and metricgroups tests are failed on a hybrid machine.
> Seems we need the no group trick for more metrics?
>
> ./perf test "perf all metricgroups test"
> 102: perf all metricgroups test                                      :
> FAILED!
>
>
> Testing DataSharing
> Error:
> The sys_perf_event_open() syscall returned with 22 (Invalid argument)
> for event (cpu_core/topdown-fe-bound/).
> /bin/dmesg | grep -i perf may provide additional information.
>
> test child finished with -1
> ---- end ----
> perf all metricgroups test: FAILED!
>
>
>
>
> ./perf test "perf all metrics test"
> 103: perf all metrics test                                           :
> FAILED!
>
> Testing tma_info_branctest child finished with -1
> ---- end ----
> perf all metrics test: FAILED!
>
> Testing tma_contested_accesses
> Metric 'tma_contested_accesses' not printed in:
> Error:
> Invalid event (cpu_core/topdown-fe-bound/) in per-thread mode, enable
> system wide with '-a'.
>
> Metric 'tma_dram_bound' not printed in:
> Error:
> Invalid event (cpu_core/topdown-mem-bound/) in per-thread mode, enable
> system wide with '-a'.
>
>
> Metric 'tma_data_sharing' not printed in:
> Error:
> Invalid event (cpu_core/topdown-fe-bound/) in per-thread mode, enable
> system wide with '-a'.
>
>
> Thanks,
> Kan

This is expected. Metrics test fails on Icelake, metricgroups doesn't
validate output but I can expect metricgroups like "transaction" to
have issues. We want to have better tests and this comes under what
we're hoping to achieve with the Valkyrie project.

Thanks,
Ian