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Searched refs:stddev (Results 1 – 11 of 11) sorted by relevance

/linux/kernel/trace/
H A Dtrace_benchmark.c42 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()
H A Dftrace.c542 unsigned long long stddev; in function_stat_show() local
570 stddev = 0; in function_stat_show()
573 stddev = rec->counter * rec->time_squared - in function_stat_show()
575 stddev = div64_ul(stddev, stddev_denom); in function_stat_show()
583 trace_print_graph_duration(stddev, &s); in function_stat_show()
/linux/tools/perf/bench/
H A Depoll-ctl.c295 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()
H A Dfutex-hash.c116 double stddev = stddev_stats(&throughput_stats); in print_summary() local
119 !params.silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg), in print_summary()
H A Dfutex-lock-pi.c65 double stddev = stddev_stats(&throughput_stats); in print_summary() local
68 !params.silent ? "\n" : "", avg, rel_stddev_stats(stddev, avg), in print_summary()
H A Depoll-wait.c285 double stddev = stddev_stats(&throughput_stats); in print_summary() local
288 avg, rel_stddev_stats(stddev, avg), in print_summary()
/linux/tools/testing/selftests/bpf/
H A Dbench.c97 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()
H A Dbench.h38 double stddev; member
/linux/tools/testing/selftests/bpf/benchs/
H A Dbench_local_storage_rcu_tasks_trace.c230 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()
/linux/tools/perf/Documentation/
H A Dperf-trace.txt142 (in msec) and relative stddev.
147 average times (in msec) and relative stddev.
H A Dperf-stat.txt139 repeat command and print average + stddev (max: 100). 0 means forever.