diff options
Diffstat (limited to 'tools/perf/util/stat-shadow.c')
| -rw-r--r-- | tools/perf/util/stat-shadow.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 924b54d15d54..901265127e36 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -241,6 +241,18 @@ void perf_stat__update_shadow_stats(struct evsel *counter, u64 count, else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES)) update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES, ctx, cpu, count); + else if (perf_stat_evsel__is(counter, TOPDOWN_RETIRING)) + update_runtime_stat(st, STAT_TOPDOWN_RETIRING, + ctx, cpu, count); + else if (perf_stat_evsel__is(counter, TOPDOWN_BAD_SPEC)) + update_runtime_stat(st, STAT_TOPDOWN_BAD_SPEC, + ctx, cpu, count); + else if (perf_stat_evsel__is(counter, TOPDOWN_FE_BOUND)) + update_runtime_stat(st, STAT_TOPDOWN_FE_BOUND, + ctx, cpu, count); + else if (perf_stat_evsel__is(counter, TOPDOWN_BE_BOUND)) + update_runtime_stat(st, STAT_TOPDOWN_BE_BOUND, + ctx, cpu, count); else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT, ctx, cpu, count); @@ -705,6 +717,47 @@ static double td_be_bound(int ctx, int cpu, struct runtime_stat *st) return sanitize_val(1.0 - sum); } +/* + * Kernel reports metrics multiplied with slots. To get back + * the ratios we need to recreate the sum. + */ + +static double td_metric_ratio(int ctx, int cpu, + enum stat_type type, + struct runtime_stat *stat) +{ + double sum = runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, ctx, cpu) + + runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, ctx, cpu) + + runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, ctx, cpu) + + runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, ctx, cpu); + double d = runtime_stat_avg(stat, type, ctx, cpu); + + if (sum) + return d / sum; + return 0; +} + +/* + * ... but only if most of the values are actually available. + * We allow two missing. + */ + +static bool full_td(int ctx, int cpu, + struct runtime_stat *stat) +{ + int c = 0; + + if (runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, ctx, cpu) > 0) + c++; + if (runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, ctx, cpu) > 0) + c++; + if (runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, ctx, cpu) > 0) + c++; + if (runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, ctx, cpu) > 0) + c++; + return c >= 2; +} + static void print_smi_cost(struct perf_stat_config *config, int cpu, struct evsel *evsel, struct perf_stat_output_ctx *out, @@ -1073,6 +1126,42 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config, be_bound * 100.); else print_metric(config, ctxp, NULL, NULL, name, 0); + } else if (perf_stat_evsel__is(evsel, TOPDOWN_RETIRING) && + full_td(ctx, cpu, st)) { + double retiring = td_metric_ratio(ctx, cpu, + STAT_TOPDOWN_RETIRING, st); + + if (retiring > 0.7) + color = PERF_COLOR_GREEN; + print_metric(config, ctxp, color, "%8.1f%%", "retiring", + retiring * 100.); + } else if (perf_stat_evsel__is(evsel, TOPDOWN_FE_BOUND) && + full_td(ctx, cpu, st)) { + double fe_bound = td_metric_ratio(ctx, cpu, + STAT_TOPDOWN_FE_BOUND, st); + + if (fe_bound > 0.2) + color = PERF_COLOR_RED; + print_metric(config, ctxp, color, "%8.1f%%", "frontend bound", + fe_bound * 100.); + } else if (perf_stat_evsel__is(evsel, TOPDOWN_BE_BOUND) && + full_td(ctx, cpu, st)) { + double be_bound = td_metric_ratio(ctx, cpu, + STAT_TOPDOWN_BE_BOUND, st); + + if (be_bound > 0.2) + color = PERF_COLOR_RED; + print_metric(config, ctxp, color, "%8.1f%%", "backend bound", + be_bound * 100.); + } else if (perf_stat_evsel__is(evsel, TOPDOWN_BAD_SPEC) && + full_td(ctx, cpu, st)) { + double bad_spec = td_metric_ratio(ctx, cpu, + STAT_TOPDOWN_BAD_SPEC, st); + + if (bad_spec > 0.1) + color = PERF_COLOR_RED; + print_metric(config, ctxp, color, "%8.1f%%", "bad speculation", + bad_spec * 100.); } else if (evsel->metric_expr) { generic_metric(config, evsel->metric_expr, evsel->metric_events, NULL, evsel->name, evsel->metric_name, NULL, 1, cpu, out, st); |