erp5/test/benchmarks: record number of deadlocks.

software/erp5/test/test/benchmarks.py

@@ -179,6 +179,17 @@ class TestOrderBuildPackingListSimulation(
       zeo_root_stats = zeo_stats.pop('root')
       assert not zeo_stats
 
+    # Deadlocks
+    deadlock_total_count = 0
+    grep = pathlib.Path(
+      self.getComputerPartitionPath('zope-activities')) / 'bin' / 'grep'
+    log_directory = pathlib.Path(
+      self.getComputerPartitionPath('zope-activities')) / 'var' / 'log'
+    for path in log_directory.glob('zope-*-event.log'):
+      deadlock_total_count += int(subprocess.run(
+        (grep, '-ac', 'Deadlock found when trying to get lock; try restarting transaction', path),
+        capture_output=True, text=True).stdout)
+
     self.logger.info(
       "Measurements for %s (after %s): "
       "elapsed=%s zope_total_rss=%s / %s root_fs_size=%s",
@@ -198,6 +209,7 @@ class TestOrderBuildPackingListSimulation(
         'zope_count': zope_count,
         'root_fs_size': root_fs_size,
         'zeo_stats': zeo_root_stats,
+        'deadlock_total_count': deadlock_total_count,
         'now': str(now),
       })