bpf: add runtime stats, max cost #4213
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=704508 expired. Closing PR. |
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Now user can enable sysctl kernel.bpf_stats_enabled to fetch run_time_ns and run_cnt. It's easy to calculate the average value. In some case, the max cost for bpf prog invoked, are more useful: is there a burst sysload or high cpu usage. This patch introduce a update stats helper. $ bpftool --json --pretty p s ... "run_max_cost_ns": 313367 Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Song Liu <song@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Stanislav Fomichev <sdf@google.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Hou Tao <houtao1@huawei.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Song Liu <song@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Stanislav Fomichev <sdf@google.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Hou Tao <houtao1@huawei.com>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=704667 expired. Closing PR. |
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Pull request for series with
subject: bpf: add runtime stats, max cost
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=704508