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rtla/timerlat: Add a summary for hist mode

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Like on rtla timerlat top, add an overall summary at the bottom
of timerlat hist. For instance:

  # timerlat hist -c 0-1 -d 10s -E 20
  # RTLA timerlat histogram
  # Time unit is microseconds (us)
  # Duration:   0 00:00:10
  Index   IRQ-000   Thr-000   IRQ-001   Thr-001
  6             1         0         0         0
  7             1         0         0         0
  8             1         0         1         0
  9             7         0         0         0
  10           16         0         0         0
  11            1         0         3         0
  15            0         0         3         0
  16            0         0        12         0
  17            0         0        28         0
  18            0         2        26         0
  19            1         1        80         1
  over:      9973      9998      9848     10000
  count:    10001     10001     10001     10001
  min:          6        18         8        19
  avg:        185       204        95       113
  max:        428       450       341       371
  ALL:        IRQ       Thr
  count:    20002     20002
  min:          6        18
  avg:        140       159
  max:        428       450

Link: https://lkml.kernel.org/r/a6bc06c798f72127edc57d1f99da8d57e1187cee.1713968967.git.bristot@kernel.org

Cc: Jonathan Corbet <corbet@lwn.net>
Suggested-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
This commit is contained in:
Daniel Bristot de Oliveira 2024-04-24 16:36:54 +02:00
parent 285dcb7665
commit 1462501c7a
1 changed files with 129 additions and 1 deletions
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130
tools/tracing/rtla/src/timerlat_hist.c
View File

@ -401,8 +401,135 @@ timerlat_print_summary(struct timerlat_hist_params *params,
trace_seq_reset(trace->seq);
}
static void
timerlat_print_stats_all(struct timerlat_hist_params *params,
struct trace_instance *trace,
struct timerlat_hist_data *data)
{
struct timerlat_hist_cpu *cpu_data;
struct timerlat_hist_cpu sum;
int cpu;
if (params->no_summary)
return;
memset(&sum, 0, sizeof(sum));
sum.min_irq = ~0;
sum.min_thread = ~0;
sum.min_user = ~0;
for (cpu = 0; cpu < data->nr_cpus; cpu++) {
if (params->cpus && !CPU_ISSET(cpu, &params->monitored_cpus))
continue;
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
cpu_data = &data->hist[cpu];
sum.irq_count += cpu_data->irq_count;
update_min(&sum.min_irq, &cpu_data->min_irq);
update_sum(&sum.sum_irq, &cpu_data->sum_irq);
update_max(&sum.max_irq, &cpu_data->max_irq);
sum.thread_count += cpu_data->thread_count;
update_min(&sum.min_thread, &cpu_data->min_thread);
update_sum(&sum.sum_thread, &cpu_data->sum_thread);
update_max(&sum.max_thread, &cpu_data->max_thread);
sum.user_count += cpu_data->user_count;
update_min(&sum.min_user, &cpu_data->min_user);
update_sum(&sum.sum_user, &cpu_data->sum_user);
update_max(&sum.max_user, &cpu_data->max_user);
}
if (!params->no_index)
trace_seq_printf(trace->seq, "ALL: ");
if (!params->no_irq)
trace_seq_printf(trace->seq, " IRQ");
if (!params->no_thread)
trace_seq_printf(trace->seq, " Thr");
if (params->user_hist)
trace_seq_printf(trace->seq, " Usr");
trace_seq_printf(trace->seq, "\n");
if (!params->no_index)
trace_seq_printf(trace->seq, "count:");
if (!params->no_irq)
trace_seq_printf(trace->seq, "%9d ",
sum.irq_count);
if (!params->no_thread)
trace_seq_printf(trace->seq, "%9d ",
sum.thread_count);
if (params->user_hist)
trace_seq_printf(trace->seq, "%9d ",
sum.user_count);
trace_seq_printf(trace->seq, "\n");
if (!params->no_index)
trace_seq_printf(trace->seq, "min: ");
if (!params->no_irq)
trace_seq_printf(trace->seq, "%9llu ",
sum.min_irq);
if (!params->no_thread)
trace_seq_printf(trace->seq, "%9llu ",
sum.min_thread);
if (params->user_hist)
trace_seq_printf(trace->seq, "%9llu ",
sum.min_user);
trace_seq_printf(trace->seq, "\n");
if (!params->no_index)
trace_seq_printf(trace->seq, "avg: ");
if (!params->no_irq)
trace_seq_printf(trace->seq, "%9llu ",
sum.sum_irq / sum.irq_count);
if (!params->no_thread)
trace_seq_printf(trace->seq, "%9llu ",
sum.sum_thread / sum.thread_count);
if (params->user_hist)
trace_seq_printf(trace->seq, "%9llu ",
sum.sum_user / sum.user_count);
trace_seq_printf(trace->seq, "\n");
if (!params->no_index)
trace_seq_printf(trace->seq, "max: ");
if (!params->no_irq)
trace_seq_printf(trace->seq, "%9llu ",
sum.max_irq);
if (!params->no_thread)
trace_seq_printf(trace->seq, "%9llu ",
sum.max_thread);
if (params->user_hist)
trace_seq_printf(trace->seq, "%9llu ",
sum.max_user);
trace_seq_printf(trace->seq, "\n");
trace_seq_do_printf(trace->seq);
trace_seq_reset(trace->seq);
}
/*
* timerlat_print_stats - print data for all CPUs
* timerlat_print_stats - print data for each CPUs
*/
static void
timerlat_print_stats(struct timerlat_hist_params *params, struct osnoise_tool *tool)
@ -485,6 +612,7 @@ timerlat_print_stats(struct timerlat_hist_params *params, struct osnoise_tool *t
trace_seq_reset(trace->seq);
timerlat_print_summary(params, trace, data);
timerlat_print_stats_all(params, trace, data);
}
/*