| /linux/kernel/trace/ |
| A D | trace_benchmark.c | 42 u64 stddev; in trace_do_benchmark() local
100 stddev = (u64)bm_cnt * bm_totalsq - bm_total * bm_total; in trace_do_benchmark()
101 do_div(stddev, (u32)bm_cnt); in trace_do_benchmark()
102 do_div(stddev, (u32)bm_cnt - 1); in trace_do_benchmark()
104 stddev = 0; in trace_do_benchmark()
110 if (stddev > 0) { in trace_do_benchmark()
126 seed = stddev; in trace_do_benchmark()
139 bm_last, bm_first, bm_max, bm_min, avg, std, stddev); in trace_do_benchmark()
143 bm_stddev = stddev; in trace_do_benchmark()
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| A D | ftrace.c | 543 unsigned long long stddev; in function_stat_show() local
567 stddev = 0; in function_stat_show()
573 stddev = rec->counter * rec->time_squared - in function_stat_show()
580 stddev = div64_ul(stddev, in function_stat_show()
589 trace_print_graph_duration(stddev, &s); in function_stat_show()
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| /linux/fs/bcachefs/ |
| A D | mean_and_variance_test.c | 96 s64 *stddev, in do_mean_and_variance_test() argument
118 KUNIT_EXPECT_EQ(test, mean_and_variance_get_stddev(mv), stddev[i]); in do_mean_and_variance_test()
131 s64 stddev[] = { 32, 29, 28, 27, 26, 25, 24 }; in mean_and_variance_test_1() local
136 d, mean, stddev, weighted_mean, weighted_stddev); in mean_and_variance_test_1()
144 s64 stddev[] = { 32, 39, 42, 44, 45 }; in mean_and_variance_test_2() local
149 d, mean, stddev, weighted_mean, weighted_stddev); in mean_and_variance_test_2()
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| /linux/tools/perf/bench/ |
| A D | epoll-ctl.c | 295 double stddev[EPOLL_NR_OPS]; in print_summary() local
299 stddev[i] = stddev_stats(&all_stats[i]); in print_summary()
303 avg[OP_EPOLL_ADD], rel_stddev_stats(stddev[OP_EPOLL_ADD], in print_summary()
306 avg[OP_EPOLL_MOD], rel_stddev_stats(stddev[OP_EPOLL_MOD], in print_summary()
309 avg[OP_EPOLL_DEL], rel_stddev_stats(stddev[OP_EPOLL_DEL], in print_summary()
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| A D | futex-hash.c | 116 double stddev = stddev_stats(&throughput_stats); in print_summary() local
119 !params.silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg), in print_summary()
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| A D | futex-lock-pi.c | 65 double stddev = stddev_stats(&throughput_stats); in print_summary() local
68 !params.silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg), in print_summary()
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| A D | epoll-wait.c | 285 double stddev = stddev_stats(&throughput_stats); in print_summary() local
288 avg, rel_stddev_stats(stddev, avg), in print_summary()
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| /linux/tools/testing/selftests/bpf/ |
| A D | bench.c | 97 gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0); in grace_period_latency_basic_stats()
99 gp_stat->stddev = sqrt(gp_stat->stddev); in grace_period_latency_basic_stats()
115 gp_stat->stddev += (IT_MEAN_DIFF * IT_MEAN_DIFF) / (res_cnt - 1.0); in grace_period_ticks_basic_stats()
117 gp_stat->stddev = sqrt(gp_stat->stddev); in grace_period_ticks_basic_stats()
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| A D | bench.h | 38 double stddev; member
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| /linux/tools/testing/selftests/bpf/benchs/ |
| A D | bench_local_storage_rcu_tasks_trace.c | 230 printf("\tavg %.3lf us\tstddev %.3lf us\n", gp_stat.mean, gp_stat.stddev); in report_final()
233 printf("\tavg %.3lf\tstddev %.3lf\n", gp_stat.mean, gp_stat.stddev); in report_final()
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| /linux/tools/perf/Documentation/ |
| A D | perf-sched.txt | 174 run times (in sec) and relative stddev.
179 max, and average run times (in sec) and relative stddev.
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| A D | perf-trace.txt | 142 (in msec) and relative stddev.
147 average times (in msec) and relative stddev.
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| A D | perf-stat.txt | 139 repeat command and print average + stddev (max: 100). 0 means forever.
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| /linux/tools/perf/util/ |
| A D | stat.h | 126 double rel_stddev_stats(double stddev, double avg);
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| A D | stat.c | 70 double rel_stddev_stats(double stddev, double avg) in rel_stddev_stats() argument
75 pct = 100.0 * stddev/avg; in rel_stddev_stats()
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| /linux/tools/perf/ |
| A D | builtin-sched.c | 2890 float stddev; in print_thread_runtime() local
2897 stddev = rel_stddev_stats(stddev_stats(&r->run_stats), mean); in print_thread_runtime()
2904 printf("%5.2f", stddev); in print_thread_runtime()
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