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;
v1->v2:
- moved benchmarks into benchs/ subdir (John);
- added benchmark "suite" scripts (John);
- few small clean ups, change defaults, etc.
Andrii Nakryiko (4):
selftests/bpf: extract parse_num_list into generic testing_helpers.c
selftests/bpf: add benchmark runner infrastructure
selftest/bpf: fmod_ret prog and implement test_overhead as part of
bench
selftest/bpf: add BPF triggering benchmark
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile | 20 +-
tools/testing/selftests/bpf/bench.c | 449 ++++++++++++++++++
tools/testing/selftests/bpf/bench.h | 81 ++++
.../selftests/bpf/benchs/bench_count.c | 91 ++++
.../selftests/bpf/benchs/bench_rename.c | 195 ++++++++
.../selftests/bpf/benchs/bench_trigger.c | 167 +++++++
.../selftests/bpf/benchs/run_bench_rename.sh | 9 +
.../selftests/bpf/benchs/run_bench_trigger.sh | 9 +
.../selftests/bpf/prog_tests/test_overhead.c | 14 +-
.../selftests/bpf/progs/test_overhead.c | 6 +
.../selftests/bpf/progs/trigger_bench.c | 47 ++
tools/testing/selftests/bpf/test_progs.c | 67 +--
tools/testing/selftests/bpf/test_progs.h | 1 +
tools/testing/selftests/bpf/testing_helpers.c | 66 +++
tools/testing/selftests/bpf/testing_helpers.h | 5 +
16 files changed, 1162 insertions(+), 66 deletions(-)
create mode 100644 tools/testing/selftests/bpf/bench.c
create mode 100644 tools/testing/selftests/bpf/bench.h
create mode 100644 tools/testing/selftests/bpf/benchs/bench_count.c
create mode 100644 tools/testing/selftests/bpf/benchs/bench_rename.c
create mode 100644 tools/testing/selftests/bpf/benchs/bench_trigger.c
create mode 100755 tools/testing/selftests/bpf/benchs/run_bench_rename.sh
create mode 100755 tools/testing/selftests/bpf/benchs/run_bench_trigger.sh
create mode 100644 tools/testing/selftests/bpf/progs/trigger_bench.c
create mode 100644 tools/testing/selftests/bpf/testing_helpers.c
create mode 100644 tools/testing/selftests/bpf/testing_helpers.h
--
2.24.1
