| /tools/tracing/rtla/src/ |
| A D | timerlat.bpf.c | 89 unsigned long long latency, in update_summary() argument
96 map_set(map, SUMMARY_CURRENT, latency); in update_summary()
102 if (latency > map_get(map, SUMMARY_MAX)) in update_summary()
103 map_set(map, SUMMARY_MAX, latency); in update_summary()
106 map_set(map, SUMMARY_MIN, latency); in update_summary()
126 unsigned long long latency, latency_us; in handle_timerlat_sample() local
132 latency = tp_args->timer_latency / output_divisor; in handle_timerlat_sample()
134 bucket = latency / bucket_size; in handle_timerlat_sample()
138 update_summary(&summary_irq, latency, bucket); in handle_timerlat_sample()
144 update_summary(&summary_thread, latency, bucket); in handle_timerlat_sample()
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| A D | timerlat_top.c | 129 unsigned long long latency) in timerlat_top_update() argument
136 latency = latency / params->output_divisor; in timerlat_top_update()
140 cpu_data->cur_irq = latency; in timerlat_top_update()
141 update_min(&cpu_data->min_irq, &latency); in timerlat_top_update()
142 update_sum(&cpu_data->sum_irq, &latency); in timerlat_top_update()
143 update_max(&cpu_data->max_irq, &latency); in timerlat_top_update()
146 cpu_data->cur_thread = latency; in timerlat_top_update()
152 cpu_data->cur_user = latency; in timerlat_top_update()
153 update_min(&cpu_data->min_user, &latency); in timerlat_top_update()
154 update_sum(&cpu_data->sum_user, &latency); in timerlat_top_update()
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| A D | timerlat_hist.c | 136 unsigned long long latency) in timerlat_hist_update() argument
145 latency = latency / params->output_divisor; in timerlat_hist_update()
147 bucket = latency / data->bucket_size; in timerlat_hist_update()
152 update_min(&data->hist[cpu].min_irq, &latency); in timerlat_hist_update()
153 update_sum(&data->hist[cpu].sum_irq, &latency); in timerlat_hist_update()
154 update_max(&data->hist[cpu].max_irq, &latency); in timerlat_hist_update()
164 update_min(&data->hist[cpu].min_user, &latency); in timerlat_hist_update()
165 update_sum(&data->hist[cpu].sum_user, &latency); in timerlat_hist_update()
166 update_max(&data->hist[cpu].max_user, &latency); in timerlat_hist_update()
183 unsigned long long context, latency; in timerlat_hist_handler() local
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| /tools/tracing/ |
| A D | Makefile | 4 all: latency rtla
10 latency: target
11 $(call descend,latency)
14 $(call descend,latency,install)
17 $(call descend,latency,clean)
28 .PHONY: all install clean latency latency_install latency_clean \
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| /tools/tracing/latency/ |
| A D | Makefile | 27 LATENCY-COLLECTOR := $(OUTPUT)latency-collector
66 latency-collector.%: fixdep FORCE
70 make $(build)=latency-collector
79 $(call QUIET_INSTALL,latency-collector)$(INSTALL) $(LATENCY-COLLECTOR) -m 755 $(DESTDIR)$(BINDIR)
80 @$(STRIP) $(DESTDIR)$(BINDIR)/latency-collector
83 $(call QUIET_CLEAN, latency-collector)
85 $(Q)@rm -f latency-collector fixdep FEATURE-DUMP
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| A D | Build | 1 latency-collector-y += latency-collector.o
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| A D | .gitignore | 2 latency-collector
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| /tools/perf/tests/shell/base_report/ |
| A D | setup.sh | 34 … --latency -o $CURRENT_TEST_DIR/perf.data.1 bash -c "for i in {1..100} ; do cat /proc/cpuinfo 1> /…
38 cat $LOGS_DIR/setup-latency.log
41 …mon/check_all_patterns_found.pl "$RE_LINE_RECORD1" "$RE_LINE_RECORD2" < $LOGS_DIR/setup-latency.log
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| /tools/perf/Documentation/ |
| A D | cpu-and-latency-overheads.txt | 1 CPU and latency overheads
9 'latency' columns for CPU and wall-clock time correspondingly).
12 latency overhead is useful to improve 'latency'. It's important to understand
16 latency of a single interactive program build.
21 While the latency overhead is: 'foo' - 90%, 'bar' - 10%. If we try to optimize
26 By default, perf shows only CPU overhead. To show latency overhead, use
27 'perf record --latency' and 'perf report':
38 To sort by latency overhead, use 'perf report --latency':
50 parallelization histogram with '--sort=latency,parallelism,comm,symbol --hierarchy'
85 of a workload use '--latency --parallelism=1-2' flags.
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| A D | perf-ftrace.txt | 12 'perf ftrace' {trace|latency|profile} <command>
23 'perf ftrace latency' calculates execution latency of a given function
138 OPTIONS for 'perf ftrace latency'
154 Use BPF to measure function latency instead of using the ftrace (it
164 --min-latency=::
165 Minimum latency for the start of the first bucket, in ms or ns (according to
168 --max-latency=::
169 Maximum latency for the start of the last bucket, in ms or ns (according to
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| A D | perf-kwork.txt | 11 'perf kwork' {record|report|latency|timehist|top}
22 'perf kwork latency' to report the per kwork latencies.
32 perf kwork latency
33 perf kwork latency -b
113 OPTIONS for 'perf kwork latency'
118 Use BPF to measure kwork latency
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| A D | perf-mem.txt | 22 Note that on Intel systems the memory latency reported is the use-latency,
23 not the pure load (or store latency). Use latency includes any pipeline
24 queuing delays in addition to the memory subsystem latency.
72 Specify desired latency for loads event. Supported on Intel, Arm64 and
77 - Supported latency values are 128 to 2048 (both inclusive).
80 - Load latency filtering is disabled by default.
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| A D | tips.txt | 50 To measure approximate function latency with Processor Trace use perf record -e intel_pt// ... ; pe…
65 For latency profiling, try: perf record/report --latency
66 For parallelism histogram, try: perf report --hierarchy --sort latency,parallelism,comm,symbol
67 To analyze particular parallelism levels, try: perf report --latency --parallelism=32-64
68 To see how parallelism changes over time, try: perf report -F time,latency,parallelism --time-quant…
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| A D | perf-sched.txt | 11 'perf sched' {record|latency|map|replay|script|timehist}
20 'perf sched latency' to report the per task scheduling latencies
25 perf sched latency
101 OPTIONS for 'perf sched latency'
110 latency stats per pid instead of per command name.
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| /tools/testing/selftests/timers/ |
| A D | nsleep-lat.c | 88 long long latency = 0; in nanosleep_lat_test() local
118 latency += timespec_sub(target, end); in nanosleep_lat_test()
121 if (latency/count > UNRESONABLE_LATENCY) { in nanosleep_lat_test()
122 ksft_print_msg("Large abs latency: %lld ns :", latency/count); in nanosleep_lat_test()
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| /tools/testing/selftests/ftrace/test.d/trigger/ |
| A D | trigger-trace-marker-synthetic-kernel.tc | 17 echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
24 grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
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| A D | trigger-trace-marker-synthetic.tc | 17 echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
27 grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
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| /tools/power/cpupower/utils/ |
| A D | cpuidle-set.c | 30 unsigned long long latency = 0, state_latency; in cmd_idle_set() local
66 latency = strtoull(optarg, &endptr, 10); in cmd_idle_set()
149 if (latency > state_latency){ in cmd_idle_set()
157 if (latency <= state_latency){ in cmd_idle_set()
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| A D | cpufreq-info.c | 446 unsigned long latency = cpufreq_get_transition_latency(cpu); in get_latency() local
452 if (!latency || latency == UINT_MAX) { in get_latency()
458 print_duration(latency); in get_latency()
461 printf("%lu\n", latency); in get_latency()
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| /tools/testing/selftests/kvm/ |
| A D | rseq_test.c | 208 int r, i, snapshot, opt, fd = -1, latency = -1; in main() local
219 latency = atoi_paranoid(optarg); in main()
248 if (latency >= 0) { in main()
258 r = write(fd, &latency, 4); in main()
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| /tools/perf/scripts/perl/bin/ |
| A D | wakeup-latency-report | 3 perf script $@ -s "$PERF_EXEC_PATH"/scripts/perl/wakeup-latency.pl
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| /tools/testing/selftests/net/forwarding/ |
| A D | sch_ets.sh | 27 rate 1Gbit burst 1Mbit latency 100ms
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| /tools/perf/util/ |
| A D | addr_location.h | 27 u64 latency; member
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| /tools/perf/util/bpf_skel/ |
| A D | func_latency.bpf.c | 36 } latency SEC(".maps");
114 hist = bpf_map_lookup_elem(&latency, &key); in update_latency()
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| /tools/perf/tests/shell/ |
| A D | ftrace.sh | 62 perf ftrace latency -T "${target_function}" sleep 0.1 > "${output}"
|