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Date:   Wed, 13 May 2020 12:23:33 -0700
From:   Alexei Starovoitov <>
To:     Andrii Nakryiko <>
Cc:     bpf <>,
        Network Development <>,
        Alexei Starovoitov <>,
        Daniel Borkmann <>,
        Andrii Nakryiko <>,
        Kernel Team <>
Subject: Re: [PATCH v3 bpf-next 0/4] Add benchmark runner and few benchmarks

On Tue, May 12, 2020 at 12:47 PM Andrii Nakryiko <> wrote:
> Add generic benchmark runner framework which simplifies writing various
> performance benchmarks in a consistent fashion.  This framework will be used
> in follow up patches to test performance of perf buffer and ring buffer as
> well.
> Patch #1 extracts parse_num_list to be re-used between test_progs and bench.
> Patch #2 adds generic runner implementation and atomic counter benchmarks to
> validate benchmark runner's behavior.
> Patch #3 implements test_overhead benchmark as part of bench runner. It also
> add fmod_ret BPF program type to a set of benchmarks.
> Patch #4 tests faster alternatives to set_task_comm() approach, tested in
> test_overhead, in search for minimal-overhead way to trigger BPF program
> execution from user-space on demand.
> v2->v3:
>   - added --prod-affinity and --cons-affinity (Yonghong);
>   - removed ringbuf-related options leftovers (Yonghong);
>   - added more benchmarking results for test_overhead performance discrepancies;

Applied. Thanks

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