From 33a1d8de3dae4dbdfc1ff38d3135128cfbc9bd0d Mon Sep 17 00:00:00 2001
From: Guillaume Desmottes <guillaume.desmottes@onestream.live>
Date: Tue, 23 Jan 2024 11:00:34 +0100
Subject: [PATCH] tracers: buffer-lateness: display some stats about late
 buffers

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1437>
---
 utils/tracers/scripts/buffer_lateness.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/utils/tracers/scripts/buffer_lateness.py b/utils/tracers/scripts/buffer_lateness.py
index c717eb3a..cf5300a1 100644
--- a/utils/tracers/scripts/buffer_lateness.py
+++ b/utils/tracers/scripts/buffer_lateness.py
@@ -1,6 +1,7 @@
 import argparse
 import csv
 import re
+import statistics
 
 import matplotlib
 import matplotlib.pyplot as plt
@@ -73,6 +74,16 @@ for (i, (pad, values)) in enumerate(pads.items()):
         color = colors[i],
     )
 
+    late = [x[1] for x in values['lateness'] if x[2]]
+    n_late = len(late)
+    n_buffers = len(values['lateness'])
+
+    print("{} late buffers: {}/{} ratio: {:.2f}% min: {} max: {} mean: {}".format(
+        pad, n_late, n_buffers, (n_late / n_buffers) * 100,
+        min(late) if n_late > 0 else "",
+        max(late) if n_late > 0 else "",
+        statistics.mean(late) if n_late > 0 else ""))
+
     if not args.no_latency:
         ax1.plot(
             [x[0] for x in values['latency']],