diff options
| -rw-r--r-- | changelog.d/3795.misc | 1 | ||||
| -rw-r--r-- | synapse/handlers/sync.py | 16 |
2 files changed, 9 insertions, 8 deletions
diff --git a/changelog.d/3795.misc b/changelog.d/3795.misc new file mode 100644 index 0000000000..9f64ee5e2b --- /dev/null +++ b/changelog.d/3795.misc @@ -0,0 +1 @@ +Make /sync slightly faster by avoiding needless copies diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 0091ceb80e..9f133ded3f 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -1729,17 +1729,17 @@ def _calculate_state( event_id_to_key = { e: key for key, e in itertools.chain( - timeline_contains.items(), - previous.items(), - timeline_start.items(), - current.items(), + iteritems(timeline_contains), + iteritems(previous), + iteritems(timeline_start), + iteritems(current), ) } - c_ids = set(e for e in current.values()) - ts_ids = set(e for e in timeline_start.values()) - p_ids = set(e for e in previous.values()) - tc_ids = set(e for e in timeline_contains.values()) + c_ids = set(e for e in itervalues(current)) + ts_ids = set(e for e in itervalues(timeline_start)) + p_ids = set(e for e in itervalues(previous)) + tc_ids = set(e for e in itervalues(timeline_contains)) # If we are lazyloading room members, we explicitly add the membership events # for the senders in the timeline into the state block returned by /sync, |