diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/storage/background_updates.py | 8 |
1 files changed, 5 insertions, 3 deletions
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. |