diff options
| -rw-r--r-- | changelog.d/12157.bugfix | 1 | ||||
| -rw-r--r-- | synapse/storage/background_updates.py | 8 | ||||
| -rw-r--r-- | tests/rest/admin/test_background_updates.py | 18 | ||||
| -rw-r--r-- | tests/storage/test_background_update.py | 4 |
4 files changed, 16 insertions, 15 deletions
diff --git a/changelog.d/12157.bugfix b/changelog.d/12157.bugfix new file mode 100644 index 0000000000..c3d2e700bb --- /dev/null +++ b/changelog.d/12157.bugfix @@ -0,0 +1 @@ +Fix a bug introduced in #4864 whereby background updates are never run with the default background batch size. diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py index d64910aded..4acc2c997d 100644 --- a/synapse/storage/background_updates.py +++ b/synapse/storage/background_updates.py @@ -102,10 +102,12 @@ class BackgroundUpdatePerformance: Returns: A duration in ms as a float """ - if self.avg_duration_ms == 0: - return 0 - elif self.total_item_count == 0: + # We want to return None if this is the first background update item + if self.total_item_count == 0: return None + # Avoid dividing by zero + elif self.avg_duration_ms == 0: + return 0 else: # Use the exponential moving average so that we can adapt to # changes in how long the update process takes. diff --git a/tests/rest/admin/test_background_updates.py b/tests/rest/admin/test_background_updates.py index fb36aa9940..becec84524 100644 --- a/tests/rest/admin/test_background_updates.py +++ b/tests/rest/admin/test_background_updates.py @@ -155,10 +155,10 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase): "current_updates": { "master": { "name": "test_update", - "average_items_per_ms": 0.001, + "average_items_per_ms": 0.1, "total_duration_ms": 1000.0, "total_item_count": ( - BackgroundUpdater.MINIMUM_BACKGROUND_BATCH_SIZE + BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE ), } }, @@ -210,10 +210,10 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase): "current_updates": { "master": { "name": "test_update", - "average_items_per_ms": 0.001, + "average_items_per_ms": 0.1, "total_duration_ms": 1000.0, "total_item_count": ( - BackgroundUpdater.MINIMUM_BACKGROUND_BATCH_SIZE + BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE ), } }, @@ -239,10 +239,10 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase): "current_updates": { "master": { "name": "test_update", - "average_items_per_ms": 0.001, + "average_items_per_ms": 0.1, "total_duration_ms": 1000.0, "total_item_count": ( - BackgroundUpdater.MINIMUM_BACKGROUND_BATCH_SIZE + BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE ), } }, @@ -278,11 +278,9 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase): "current_updates": { "master": { "name": "test_update", - "average_items_per_ms": 0.001, + "average_items_per_ms": 0.05263157894736842, "total_duration_ms": 2000.0, - "total_item_count": ( - 2 * BackgroundUpdater.MINIMUM_BACKGROUND_BATCH_SIZE - ), + "total_item_count": (110), } }, "enabled": True, diff --git a/tests/storage/test_background_update.py b/tests/storage/test_background_update.py index 39dcc094bd..9fdf54ea31 100644 --- a/tests/storage/test_background_update.py +++ b/tests/storage/test_background_update.py @@ -66,13 +66,13 @@ class BackgroundUpdateTestCase(unittest.HomeserverTestCase): self.update_handler.reset_mock() res = self.get_success( self.updates.do_next_background_update(False), - by=0.01, + by=0.02, ) self.assertFalse(res) # on the first call, we should get run with the default background update size self.update_handler.assert_called_once_with( - {"my_key": 1}, self.updates.MINIMUM_BACKGROUND_BATCH_SIZE + {"my_key": 1}, self.updates.DEFAULT_BACKGROUND_BATCH_SIZE ) # second step: complete the update |