Re: [PATCH bpf-next v2 2/2] [no_merge] selftests/bpf: Benchmark runtime performance with private stack

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On Thu, Jul 18, 2024 at 2:44 PM Yonghong Song <yonghong.song@xxxxxxxxx> wrote:
>
>
> >    $ perf record -- ./bench -w3 -d10 -a --nr-batch-iters=4096 private-stack
> >      18.94%  bench                                              [k]
> >      16.88%  bench    bpf_prog_bcf7977d3b93787c_func1           [k] bpf_prog_bcf7977d3b93787c_func1
> >      15.77%  bench    bpf_trampoline_6442522961                 [k]

...

> > NOTE: I tried 6.4 perf and 6.10 perf, both of which have issues. I will investigate this further.
>
> I tried with perf built with latest bpf-next and with no-private-stack, the issue still
> exists. Will debug more.

Try this fix:
https://lore.kernel.org/all/20240714065533.1112616-1-houtao@xxxxxxxxxxxxxxx/

btw you were cc-ed on it. your @ fb goes to spam ? ;)





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