From: Łukasz <lukaszlapinski7@gmail.com>
Date: Sat, 11 Jul 2026 17:44:31 +0000 (+0200)
Subject: gh-153293: Clear opcode statistics in the live profiler's reset_stats() (#153295)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43b0e01b5098c9e796957c10a992d8e6e95e0ae1;p=thirdparty%2FPython%2Fcpython.git

gh-153293: Clear opcode statistics in the live profiler's reset_stats() (#153295)
---

diff --git a/Lib/profiling/sampling/live_collector/collector.py b/Lib/profiling/sampling/live_collector/collector.py
index 2805134f239e..553c856c6f8c 100644
--- a/Lib/profiling/sampling/live_collector/collector.py
+++ b/Lib/profiling/sampling/live_collector/collector.py
@@ -702,6 +702,7 @@ class LiveStatsCollector(Collector):
     def reset_stats(self):
         """Reset all collected statistics."""
         self.result.clear()
+        self.opcode_stats.clear()
         self.per_thread_data.clear()
         self.thread_ids.clear()
         self.view_mode = "ALL"
diff --git a/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_interaction.py b/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_interaction.py
index baf478133fc6..6dfdb9a192e0 100644
--- a/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_interaction.py
+++ b/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_interaction.py
@@ -99,6 +99,7 @@ class TestLiveCollectorInteractiveControls(unittest.TestCase):
             "cumulative_calls": 75,
             "total_rec_calls": 0,
         }
+        self.collector.opcode_stats[("test.py", 1, "func")][100] = 5
 
         # Reset
         self.collector.reset_stats()
@@ -107,6 +108,7 @@ class TestLiveCollectorInteractiveControls(unittest.TestCase):
         self.assertEqual(self.collector.successful_samples, 0)
         self.assertEqual(self.collector.failed_samples, 0)
         self.assertEqual(len(self.collector.result), 0)
+        self.assertEqual(len(self.collector.opcode_stats), 0)
 
     def test_increase_refresh_rate(self):
         """Test increasing refresh rate (faster updates)."""
diff --git a/Misc/NEWS.d/next/Library/2026-07-07-22-06-52.gh-issue-153293.0DvYdc.rst b/Misc/NEWS.d/next/Library/2026-07-07-22-06-52.gh-issue-153293.0DvYdc.rst
new file mode 100644
index 000000000000..ac358bb7fc0a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-07-07-22-06-52.gh-issue-153293.0DvYdc.rst
@@ -0,0 +1,2 @@
+Fix the live sampling profiler TUI keeping stale aggregated opcode
+statistics after a stats reset.