Phase 19: measure graph scaling and guard capacity and contention behavior

tools/stress.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+"""Run existing publication/GUI tests while two ordinary CPU workers contend."""
+import argparse
+from pathlib import Path
+import subprocess
+import sys
+
+
+def main():
+    p = argparse.ArgumentParser(description=__doc__)
+    p.add_argument('--build-dir', type=Path, required=True)
+    p.add_argument('--gui', action='store_true')
+    a = p.parse_args()
+    workers = []
+    try:
+        for _ in range(2):
+            workers.append(subprocess.Popen([sys.executable, '-c', 'x=1\nwhile True: x=(x*1664525+1013904223)&0xffffffff']))
+        for name in ('test_realtime', 'test_reliability', 'test_scale'):
+            subprocess.run([str((a.build_dir / name).resolve())], check=True, timeout=120)
+        if a.gui:
+            # The GUI suite pumps timers and forces redraw during engine/edit tests.
+            subprocess.run(['xvfb-run', '-a', '-s', '-screen 0 1280x800x24',
+                            str((a.build_dir / 'test_gui').resolve())], check=True, timeout=120)
+    finally:
+        for w in workers:
+            w.terminate()
+        for w in workers:
+            w.wait(timeout=10)
+    print('Publication, capacity and optional GUI/timer tests passed under two CPU workers.')
+
+
+if __name__ == '__main__':
+    main()