Add a new benchmark for hashmap lookups and fix several typos. See individual commits for descriptions. One thing to mention here is that in commit 3 I've patched bench so that now command line options can be reused by different benchmarks. The benchmark itself is added in the last commit 6. I am using this benchmark to test map lookup productivity when using a different hash function (see https://fosdem.org/2023/schedule/event/bpf_hashing/). The results provided by the benchmark look reasonable and match the results of my different benchmarks (requiring to patch kernel to get actual statistics on map lookups). Anton Protopopov (6): selftest/bpf/benchs: fix a typo in bpf_hashmap_full_update selftest/bpf/benchs: make a function static in bpf_hashmap_full_update selftest/bpf/benchs: enhance argp parsing selftest/bpf/benchs: make quiet option common selftest/bpf/benchs: print less if the quiet option is set selftest/bpf/benchs: Add benchmark for hashmap lookups tools/testing/selftests/bpf/Makefile | 5 +- tools/testing/selftests/bpf/bench.c | 126 +++++++- tools/testing/selftests/bpf/bench.h | 24 ++ .../bpf/benchs/bench_bloom_filter_map.c | 6 - .../benchs/bench_bpf_hashmap_full_update.c | 4 +- .../bpf/benchs/bench_bpf_hashmap_lookup.c | 277 ++++++++++++++++++ .../selftests/bpf/benchs/bench_bpf_loop.c | 4 - .../bpf/benchs/bench_local_storage.c | 5 - .../bench_local_storage_rcu_tasks_trace.c | 20 +- .../selftests/bpf/benchs/bench_ringbufs.c | 8 - .../selftests/bpf/benchs/bench_strncmp.c | 4 - .../run_bench_bpf_hashmap_full_update.sh | 2 +- .../selftests/bpf/progs/bpf_hashmap_lookup.c | 61 ++++ 13 files changed, 486 insertions(+), 60 deletions(-) create mode 100644 tools/testing/selftests/bpf/benchs/bench_bpf_hashmap_lookup.c create mode 100644 tools/testing/selftests/bpf/progs/bpf_hashmap_lookup.c -- 2.34.1
