diff options
Diffstat (limited to 'tools/testing/selftests/bpf/bench.c')
| -rw-r--r-- | tools/testing/selftests/bpf/bench.c | 71 |
1 files changed, 54 insertions, 17 deletions
diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c index cc4722f693e9..f973320e6dbf 100644 --- a/tools/testing/selftests/bpf/bench.c +++ b/tools/testing/selftests/bpf/bench.c @@ -29,26 +29,10 @@ static int libbpf_print_fn(enum libbpf_print_level level, return vfprintf(stderr, format, args); } -static int bump_memlock_rlimit(void) +void setup_libbpf(void) { - struct rlimit rlim_new = { - .rlim_cur = RLIM_INFINITY, - .rlim_max = RLIM_INFINITY, - }; - - return setrlimit(RLIMIT_MEMLOCK, &rlim_new); -} - -void setup_libbpf() -{ - int err; - libbpf_set_strict_mode(LIBBPF_STRICT_ALL); libbpf_set_print(libbpf_print_fn); - - err = bump_memlock_rlimit(); - if (err) - fprintf(stderr, "failed to increase RLIMIT_MEMLOCK: %d", err); } void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns) @@ -134,6 +118,39 @@ void hits_drops_report_final(struct bench_res res[], int res_cnt) total_ops_mean, total_ops_stddev); } +void ops_report_progress(int iter, struct bench_res *res, long delta_ns) +{ + double hits_per_sec, hits_per_prod; + + hits_per_sec = res->hits / 1000000.0 / (delta_ns / 1000000000.0); + hits_per_prod = hits_per_sec / env.producer_cnt; + + printf("Iter %3d (%7.3lfus): ", iter, (delta_ns - 1000000000) / 1000.0); + + printf("hits %8.3lfM/s (%7.3lfM/prod)\n", hits_per_sec, hits_per_prod); +} + +void ops_report_final(struct bench_res res[], int res_cnt) +{ + double hits_mean = 0.0, hits_stddev = 0.0; + int i; + + for (i = 0; i < res_cnt; i++) + hits_mean += res[i].hits / 1000000.0 / (0.0 + res_cnt); + + if (res_cnt > 1) { + for (i = 0; i < res_cnt; i++) + hits_stddev += (hits_mean - res[i].hits / 1000000.0) * + (hits_mean - res[i].hits / 1000000.0) / + (res_cnt - 1.0); + + hits_stddev = sqrt(hits_stddev); + } + printf("Summary: throughput %8.3lf \u00B1 %5.3lf M ops/s (%7.3lfM ops/prod), ", + hits_mean, hits_stddev, hits_mean / env.producer_cnt); + printf("latency %8.3lf ns/op\n", 1000.0 / hits_mean * env.producer_cnt); +} + const char *argp_program_version = "benchmark"; const char *argp_program_bug_address = "<bpf@vger.kernel.org>"; const char argp_program_doc[] = @@ -171,10 +188,14 @@ static const struct argp_option opts[] = { extern struct argp bench_ringbufs_argp; extern struct argp bench_bloom_map_argp; +extern struct argp bench_bpf_loop_argp; +extern struct argp bench_strncmp_argp; static const struct argp_child bench_parsers[] = { { &bench_ringbufs_argp, 0, "Ring buffers benchmark", 0 }, { &bench_bloom_map_argp, 0, "Bloom filter map benchmark", 0 }, + { &bench_bpf_loop_argp, 0, "bpf_loop helper benchmark", 0 }, + { &bench_strncmp_argp, 0, "bpf_strncmp helper benchmark", 0 }, {}, }; @@ -359,6 +380,11 @@ extern const struct bench bench_trig_kprobe; extern const struct bench bench_trig_fentry; extern const struct bench bench_trig_fentry_sleep; extern const struct bench bench_trig_fmodret; +extern const struct bench bench_trig_uprobe_base; +extern const struct bench bench_trig_uprobe_with_nop; +extern const struct bench bench_trig_uretprobe_with_nop; +extern const struct bench bench_trig_uprobe_without_nop; +extern const struct bench bench_trig_uretprobe_without_nop; extern const struct bench bench_rb_libbpf; extern const struct bench bench_rb_custom; extern const struct bench bench_pb_libbpf; @@ -368,6 +394,9 @@ extern const struct bench bench_bloom_update; extern const struct bench bench_bloom_false_positive; extern const struct bench bench_hashmap_without_bloom; extern const struct bench bench_hashmap_with_bloom; +extern const struct bench bench_bpf_loop; +extern const struct bench bench_strncmp_no_helper; +extern const struct bench bench_strncmp_helper; static const struct bench *benchs[] = { &bench_count_global, @@ -385,6 +414,11 @@ static const struct bench *benchs[] = { &bench_trig_fentry, &bench_trig_fentry_sleep, &bench_trig_fmodret, + &bench_trig_uprobe_base, + &bench_trig_uprobe_with_nop, + &bench_trig_uretprobe_with_nop, + &bench_trig_uprobe_without_nop, + &bench_trig_uretprobe_without_nop, &bench_rb_libbpf, &bench_rb_custom, &bench_pb_libbpf, @@ -394,6 +428,9 @@ static const struct bench *benchs[] = { &bench_bloom_false_positive, &bench_hashmap_without_bloom, &bench_hashmap_with_bloom, + &bench_bpf_loop, + &bench_strncmp_no_helper, + &bench_strncmp_helper, }; static void setup_benchmark() |