#include <stdio.h> #include "evsel.h" #include "stat.h" #include "color.h" #include "pmu.h" enum { CTX_BIT_USER = 1 << 0, CTX_BIT_KERNEL = 1 << 1, CTX_BIT_HV = 1 << 2, CTX_BIT_HOST = 1 << 3, CTX_BIT_IDLE = 1 << 4, CTX_BIT_MAX = 1 << 5, }; #define NUM_CTX CTX_BIT_MAX /* * AGGR_GLOBAL: Use CPU 0 * AGGR_SOCKET: Use first CPU of socket * AGGR_CORE: Use first CPU of core * AGGR_NONE: Use matching CPU * AGGR_THREAD: Not supported? */ static struct stats runtime_nsecs_stats[MAX_NR_CPUS]; static struct stats runtime_cycles_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_stalled_cycles_front_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_stalled_cycles_back_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_branches_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_cacherefs_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_l1_dcache_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_l1_icache_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_ll_cache_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_itlb_cache_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_dtlb_cache_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_cycles_in_tx_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_transaction_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_elision_stats[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_topdown_total_slots[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_topdown_slots_issued[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_topdown_slots_retired[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_topdown_fetch_bubbles[NUM_CTX][MAX_NR_CPUS]; static struct stats runtime_topdown_recovery_bubbles[NUM_CTX][MAX_NR_CPUS]; static bool have_frontend_stalled; struct stats walltime_nsecs_stats; void perf_stat__init_shadow_stats(void) { have_frontend_stalled = pmu_have_event("cpu", "stalled-cycles-frontend"); } static int evsel_context(struct perf_evsel *evsel) { int ctx = 0; if (evsel->attr.exclude_kernel) ctx |= CTX_BIT_KERNEL; if (evsel->attr.exclude_user) ctx |= CTX_BIT_USER; if (evsel->attr.exclude_hv) ctx |= CTX_BIT_HV; if (evsel->attr.exclude_host) ctx |= CTX_BIT_HOST; if (evsel->attr.exclude_idle) ctx |= CTX_BIT_IDLE; return ctx; } void perf_stat__reset_shadow_stats(void) { memset(runtime_nsecs_stats, 0, sizeof(runtime_nsecs_stats)); memset(runtime_cycles_stats, 0, sizeof(runtime_cycles_stats)); memset(runtime_stalled_cycles_front_stats, 0, sizeof(runtime_stalled_cycles_front_stats)); memset(runtime_stalled_cycles_back_stats, 0, sizeof(runtime_stalled_cycles_back_stats)); memset(runtime_branches_stats, 0, sizeof(runtime_branches_stats)); memset(runtime_cacherefs_stats, 0, sizeof(runtime_cacherefs_stats)); memset(runtime_l1_dcache_stats, 0, sizeof(runtime_l1_dcache_stats)); memset(runtime_l1_icache_stats, 0, sizeof(runtime_l1_icache_stats)); memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats)); memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats)); memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats)); memset(runtime_cycles_in_tx_stats, 0, sizeof(runtime_cycles_in_tx_stats)); memset(runtime_transaction_stats, 0, sizeof(runtime_transaction_stats)); memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats)); memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats)); memset(runtime_topdown_total_slots, 0, sizeof(runtime_topdown_total_slots)); memset(runtime_topdown_slots_retired, 0, sizeof(runtime_topdown_slots_retired)); memset(runtime_topdown_slots_issued, 0, sizeof(runtime_topdown_slots_issued)); memset(runtime_topdown_fetch_bubbles, 0, sizeof(runtime_topdown_fetch_bubbles)); memset(runtime_topdown_recovery_bubbles, 0, sizeof(runtime_topdown_recovery_bubbles)); } /* * Update various tracking values we maintain to print * more semantic information such as miss/hit ratios, * instruction rates, etc: */ void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count, int cpu) { int ctx = evsel_context(counter); if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) || perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK)) update_stats(&runtime_nsecs_stats[cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) update_stats(&runtime_cycles_stats[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, CYCLES_IN_TX)) update_stats(&runtime_cycles_in_tx_stats[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, TRANSACTION_START)) update_stats(&runtime_transaction_stats[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, ELISION_START)) update_stats(&runtime_elision_stats[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS)) update_stats(&runtime_topdown_total_slots[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED)) update_stats(&runtime_topdown_slots_issued[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED)) update_stats(&runtime_topdown_slots_retired[ctx][cpu], count[0]); else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES)) update_stats(&runtime_topdown_fetch_bubbles[ctx][cpu],count[0]); else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES)) update_stats(&runtime_topdown_recovery_bubbles[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) update_stats(&runtime_stalled_cycles_front_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) update_stats(&runtime_stalled_cycles_back_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) update_stats(&runtime_branches_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) update_stats(&runtime_cacherefs_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) update_stats(&runtime_l1_dcache_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL)) update_stats(&runtime_ll_cache_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) update_stats(&runtime_dtlb_cache_stats[ctx][cpu], count[0]); else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) update_stats(&runtime_itlb_cache_stats[ctx][cpu], count[0]); } /* used for get_ratio_color() */ enum grc_type { GRC_STALLED_CYCLES_FE, GRC_STALLED_CYCLES_BE, GRC_CACHE_MISSES, GRC_MAX_NR }; static const char *get_ratio_color(enum grc_type type, double ratio) { static const double grc_table[GRC_MAX_NR][3] = { [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, }; const char *color = PERF_COLOR_NORMAL; if (ratio > grc_table[type][0]) color = PERF_COLOR_RED; else if (ratio > grc_table[type][1]) color = PERF_COLOR_MAGENTA; else if (ratio > grc_table[type][2]) color = PERF_COLOR_YELLOW; return color; } static void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_cycles_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); if (ratio) out->print_metric(out->ctx, color, "%7.2f%%", "frontend cycles idle", ratio); else out->print_metric(out->ctx, NULL, NULL, "frontend cycles idle", 0); } static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_cycles_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "backend cycles idle", ratio); } static void print_branch_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_branches_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all branches", ratio); } static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_l1_dcache_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio); } static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_l1_icache_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio); } static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_dtlb_cache_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio); } static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_itlb_cache_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio); } static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel, double avg, struct perf_stat_output_ctx *out) { double total, ratio = 0.0; const char *color; int ctx = evsel_context(evsel); total = avg_stats(&runtime_ll_cache_stats[ctx][cpu]); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_CACHE_MISSES, ratio); out->print_metric(out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio); } /* * High level "TopDown" CPU core pipe line bottleneck break down. * * Basic concept following * Yasin, A Top Down Method for Performance analysis and Counter architecture * ISPASS14 * * The CPU pipeline is divided into 4 areas that can be bottlenecks: * * Frontend -> Backend -> Retiring * BadSpeculation in addition means out of order execution that is thrown away * (for example branch mispredictions) * Frontend is instruction decoding. * Backend is execution, like computation and accessing data in memory * Retiring is good execution that is not directly bottlenecked * * The formulas are computed in slots. * A slot is an entry in the pipeline each for the pipeline width * (for example a 4-wide pipeline has 4 slots for each cycle) * * Formulas: * BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) / * TotalSlots * Retiring = SlotsRetired / TotalSlots * FrontendBound = FetchBubbles / TotalSlots * BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound * * The kernel provides the mapping to the low level CPU events and any scaling * needed for the CPU pipeline width, for example: * * TotalSlots = Cycles * 4 * * The scaling factor is communicated in the sysfs unit. * * In some cases the CPU may not be able to measure all the formulas due to * missing events. In this case multiple formulas are combined, as possible. * * Full TopDown supports more levels to sub-divide each area: for example * BackendBound into computing bound and memory bound. For now we only * support Level 1 TopDown. */ static double sanitize_val(double x) { if (x < 0 && x >= -0.02) return 0.0; return x; } static double td_total_slots(int ctx, int cpu) { return avg_stats(&runtime_topdown_total_slots[ctx][cpu]); } static double td_bad_spec(int ctx, int cpu) { double bad_spec = 0; double total_slots; double total; total = avg_stats(&runtime_topdown_slots_issued[ctx][cpu]) - avg_stats(&runtime_topdown_slots_retired[ctx][cpu]) + avg_stats(&runtime_topdown_recovery_bubbles[ctx][cpu]); total_slots = td_total_slots(ctx, cpu); if (total_slots) bad_spec = total / total_slots; return sanitize_val(bad_spec); } static double td_retiring(int ctx, int cpu) { double retiring = 0; double total_slots = td_total_slots(ctx, cpu); double ret_slots = avg_stats(&runtime_topdown_slots_retired[ctx][cpu]); if (total_slots) retiring = ret_slots / total_slots; return retiring; } static double td_fe_bound(int ctx, int cpu) { double fe_bound = 0; double total_slots = td_total_slots(ctx, cpu); double fetch_bub = avg_stats(&runtime_topdown_fetch_bubbles[ctx][cpu]); if (total_slots) fe_bound = fetch_bub / total_slots; return fe_bound; } static double td_be_bound(int ctx, int cpu) { double sum = (td_fe_bound(ctx, cpu) + td_bad_spec(ctx, cpu) + td_retiring(ctx, cpu)); if (sum == 0) return 0; return sanitize_val(1.0 - sum); } void perf_stat__print_shadow_stats(struct perf_evsel *evsel, double avg, int cpu, struct perf_stat_output_ctx *out) { void *ctxp = out->ctx; print_metric_t print_metric = out->print_metric; double total, ratio = 0.0, total2; const char *color = NULL; int ctx = evsel_context(evsel); if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { total = avg_stats(&runtime_cycles_stats[ctx][cpu]); if (total) { ratio = avg / total; print_metric(ctxp, NULL, "%7.2f ", "insn per cycle", ratio); } else { print_metric(ctxp, NULL, NULL, "insn per cycle", 0); } total = avg_stats(&runtime_stalled_cycles_front_stats[ctx][cpu]); total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[ctx][cpu])); if (total && avg) { out->new_line(ctxp); ratio = total / avg; print_metric(ctxp, NULL, "%7.2f ", "stalled cycles per insn", ratio); } else if (have_frontend_stalled) { print_metric(ctxp, NULL, NULL, "stalled cycles per insn", 0); } } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) { if (runtime_branches_stats[ctx][cpu].n != 0) print_branch_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all branches", 0); } else if ( evsel->attr.type == PERF_TYPE_HW_CACHE && evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { if (runtime_l1_dcache_stats[ctx][cpu].n != 0) print_l1_dcache_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0); } else if ( evsel->attr.type == PERF_TYPE_HW_CACHE && evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { if (runtime_l1_icache_stats[ctx][cpu].n != 0) print_l1_icache_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all L1-icache hits", 0); } else if ( evsel->attr.type == PERF_TYPE_HW_CACHE && evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { if (runtime_dtlb_cache_stats[ctx][cpu].n != 0) print_dtlb_cache_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all dTLB cache hits", 0); } else if ( evsel->attr.type == PERF_TYPE_HW_CACHE && evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { if (runtime_itlb_cache_stats[ctx][cpu].n != 0) print_itlb_cache_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all iTLB cache hits", 0); } else if ( evsel->attr.type == PERF_TYPE_HW_CACHE && evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL | ((PERF_COUNT_HW_CACHE_OP_READ) << 8) | ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { if (runtime_ll_cache_stats[ctx][cpu].n != 0) print_ll_cache_misses(cpu, evsel, avg, out); else print_metric(ctxp, NULL, NULL, "of all LL-cache hits", 0); } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) { total = avg_stats(&runtime_cacherefs_stats[ctx][cpu]); if (total) ratio = avg * 100 / total; if (runtime_cacherefs_stats[ctx][cpu].n != 0) print_metric(ctxp, NULL, "%8.3f %%", "of all cache refs", ratio); else print_metric(ctxp, NULL, NULL, "of all cache refs", 0); } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { print_stalled_cycles_frontend(cpu, evsel, avg, out); } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { print_stalled_cycles_backend(cpu, evsel, avg, out); } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { total = avg_stats(&runtime_nsecs_stats[cpu]); if (total) { ratio = avg / total; print_metric(ctxp, NULL, "%8.3f", "GHz", ratio); } else { print_metric(ctxp, NULL, NULL, "Ghz", 0); } } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) { total = avg_stats(&runtime_cycles_stats[ctx][cpu]); if (total) print_metric(ctxp, NULL, "%7.2f%%", "transactional cycles", 100.0 * (avg / total)); else print_metric(ctxp, NULL, NULL, "transactional cycles", 0); } else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) { total = avg_stats(&runtime_cycles_stats[ctx][cpu]); total2 = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]); if (total2 < avg) total2 = avg; if (total) print_metric(ctxp, NULL, "%7.2f%%", "aborted cycles", 100.0 * ((total2-avg) / total)); else print_metric(ctxp, NULL, NULL, "aborted cycles", 0); } else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) { total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]); if (avg) ratio = total / avg; if (runtime_cycles_in_tx_stats[ctx][cpu].n != 0) print_metric(ctxp, NULL, "%8.0f", "cycles / transaction", ratio); else print_metric(ctxp, NULL, NULL, "cycles / transaction", 0); } else if (perf_stat_evsel__is(evsel, ELISION_START)) { total = avg_stats(&runtime_cycles_in_tx_stats[ctx][cpu]); if (avg) ratio = total / avg; print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio); } else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK) || perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK)) { if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0) print_metric(ctxp, NULL, "%8.3f", "CPUs utilized", avg / ratio); else print_metric(ctxp, NULL, NULL, "CPUs utilized", 0); } else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) { double fe_bound = td_fe_bound(ctx, cpu); if (fe_bound > 0.2) color = PERF_COLOR_RED; print_metric(ctxp, color, "%8.1f%%", "frontend bound", fe_bound * 100.); } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) { double retiring = td_retiring(ctx, cpu); if (retiring > 0.7) color = PERF_COLOR_GREEN; print_metric(ctxp, color, "%8.1f%%", "retiring", retiring * 100.); } else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) { double bad_spec = td_bad_spec(ctx, cpu); if (bad_spec > 0.1) color = PERF_COLOR_RED; print_metric(ctxp, color, "%8.1f%%", "bad speculation", bad_spec * 100.); } else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) { double be_bound = td_be_bound(ctx, cpu); const char *name = "backend bound"; static int have_recovery_bubbles = -1; /* In case the CPU does not support topdown-recovery-bubbles */ if (have_recovery_bubbles < 0) have_recovery_bubbles = pmu_have_event("cpu", "topdown-recovery-bubbles"); if (!have_recovery_bubbles) name = "backend bound/bad spec"; if (be_bound > 0.2) color = PERF_COLOR_RED; if (td_total_slots(ctx, cpu) > 0) print_metric(ctxp, color, "%8.1f%%", name, be_bound * 100.); else print_metric(ctxp, NULL, NULL, name, 0); } else if (runtime_nsecs_stats[cpu].n != 0) { char unit = 'M'; char unit_buf[10]; total = avg_stats(&runtime_nsecs_stats[cpu]); if (total) ratio = 1000.0 * avg / total; if (ratio < 0.001) { ratio *= 1000; unit = 'K'; } snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); print_metric(ctxp, NULL, "%8.3f", unit_buf, ratio); } else { print_metric(ctxp, NULL, NULL, NULL, 0); } }