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Date: Wed, 24 Apr 2024 16:36:54 +0200
From: Daniel Bristot de Oliveira <bristot@...nel.org>
To: Daniel Bristot de Oliveira <bristot@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
linux-trace-kernel@...r.kernel.org
Cc: Jonathan Corbet <corbet@....net>,
Juri Lelli <juri.lelli@...hat.com>,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 5/8] rtla/timerlat: Add a summary for hist mode
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
Suggested-by: Juri Lelli <juri.lelli@...hat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@...nel.org>
---
tools/tracing/rtla/src/timerlat_hist.c | 130 ++++++++++++++++++++++++-
1 file changed, 129 insertions(+), 1 deletion(-)
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 8bd51aab6513..b12c6b571dd4 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -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, ¶ms->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);
}
/*
--
2.44.0
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