From: Gyutae Bae <[email protected]> Add a multi-producer benchmark for perfbuf to complement the existing ringbuf multi-producer test. Unlike ringbuf which uses a shared buffer and experiences contention, perfbuf uses per-CPU buffers so the test measures scaling behavior rather than contention.
This allows developers to compare perfbuf vs ringbuf performance under multi-producer workloads when choosing between the two for their systems. Signed-off-by: Gyutae Bae <[email protected]> --- tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh b/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh index 83e05e837871..123b7feb6935 100755 --- a/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh +++ b/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh @@ -49,6 +49,11 @@ for b in 1 2 3 4 8 12 16 20 24 28 32 36 40 44 48 52; do summarize "rb-libbpf nr_prod $b" "$($RUN_RB_BENCH -p$b --rb-batch-cnt 50 rb-libbpf)" done +header "Perfbuf, multi-producer" +for b in 1 2 3 4 8 12 16 20 24 28 32 36 40 44 48 52; do + summarize "pb-libbpf nr_prod $b" "$($RUN_RB_BENCH -p$b --rb-batch-cnt 50 --rb-sample-rate 50 pb-libbpf)" +done + header "Ringbuf, multi-producer contention in overwrite mode, no consumer" for b in 1 2 3 4 8 12 16 20 24 28 32 36 40 44 48 52; do summarize "rb-prod nr_prod $b" "$($RUN_BENCH -p$b --rb-batch-cnt 50 --rb-overwrite --rb-bench-producer rb-libbpf)" -- 2.39.5 (Apple Git-154)
