diff --git a/packages/overlays/matrix-synapse/patches/0015-Minor-performance-improvements-to-notifier-replicati.patch b/packages/overlays/matrix-synapse/patches/0015-Minor-performance-improvements-to-notifier-replicati.patch
deleted file mode 100644
index 1e2bdec..0000000
--- a/packages/overlays/matrix-synapse/patches/0015-Minor-performance-improvements-to-notifier-replicati.patch
+++ /dev/null
@@ -1,116 +0,0 @@
-From 4eaab31757f096a04f4278d722cdef1eb92a1743 Mon Sep 17 00:00:00 2001
-From: Erik Johnston <erikj@element.io>
-Date: Tue, 29 Apr 2025 14:08:32 +0100
-Subject: [PATCH 15/74] Minor performance improvements to notifier/replication
- (#18367)
-
-These are some improvements to `on_new_event` which is a hot path. Not
-sure how much this will save, but maybe like ~5%?
-
-Possibly easier to review commit-by-commit
----
- changelog.d/18367.misc | 1 +
- synapse/notifier.py | 61 +++++++++++++++++++++---------------------
- 2 files changed, 32 insertions(+), 30 deletions(-)
- create mode 100644 changelog.d/18367.misc
-
-diff --git a/changelog.d/18367.misc b/changelog.d/18367.misc
-new file mode 100644
-index 0000000000..2e8b897fa6
---- /dev/null
-+++ b/changelog.d/18367.misc
-@@ -0,0 +1 @@
-+Minor performance improvements to the notifier.
-diff --git a/synapse/notifier.py b/synapse/notifier.py
-index 88f531182a..1914d0c914 100644
---- a/synapse/notifier.py
-+++ b/synapse/notifier.py
-@@ -66,7 +66,6 @@ from synapse.types import (
- from synapse.util.async_helpers import (
- timeout_deferred,
- )
--from synapse.util.metrics import Measure
- from synapse.util.stringutils import shortstr
- from synapse.visibility import filter_events_for_client
-
-@@ -520,20 +519,22 @@ class Notifier:
- users = users or []
- rooms = rooms or []
-
-- with Measure(self.clock, "on_new_event"):
-- user_streams: Set[_NotifierUserStream] = set()
--
-- log_kv(
-- {
-- "waking_up_explicit_users": len(users),
-- "waking_up_explicit_rooms": len(rooms),
-- "users": shortstr(users),
-- "rooms": shortstr(rooms),
-- "stream": stream_key,
-- "stream_id": new_token,
-- }
-- )
-+ user_streams: Set[_NotifierUserStream] = set()
-+
-+ log_kv(
-+ {
-+ "waking_up_explicit_users": len(users),
-+ "waking_up_explicit_rooms": len(rooms),
-+ "users": shortstr(users),
-+ "rooms": shortstr(rooms),
-+ "stream": stream_key,
-+ "stream_id": new_token,
-+ }
-+ )
-
-+ # Only calculate which user streams to wake up if there are, in fact,
-+ # any user streams registered.
-+ if self.user_to_user_stream or self.room_to_user_streams:
- for user in users:
- user_stream = self.user_to_user_stream.get(str(user))
- if user_stream is not None:
-@@ -565,25 +566,25 @@ class Notifier:
- # We resolve all these deferreds in one go so that we only need to
- # call `PreserveLoggingContext` once, as it has a bunch of overhead
- # (to calculate performance stats)
-- with PreserveLoggingContext():
-- for listener in listeners:
-- listener.callback(current_token)
-+ if listeners:
-+ with PreserveLoggingContext():
-+ for listener in listeners:
-+ listener.callback(current_token)
-
-- users_woken_by_stream_counter.labels(stream_key).inc(len(user_streams))
-+ if user_streams:
-+ users_woken_by_stream_counter.labels(stream_key).inc(len(user_streams))
-
-- self.notify_replication()
-+ self.notify_replication()
-
-- # Notify appservices.
-- try:
-- self.appservice_handler.notify_interested_services_ephemeral(
-- stream_key,
-- new_token,
-- users,
-- )
-- except Exception:
-- logger.exception(
-- "Error notifying application services of ephemeral events"
-- )
-+ # Notify appservices.
-+ try:
-+ self.appservice_handler.notify_interested_services_ephemeral(
-+ stream_key,
-+ new_token,
-+ users,
-+ )
-+ except Exception:
-+ logger.exception("Error notifying application services of ephemeral events")
-
- def on_new_replication_data(self) -> None:
- """Used to inform replication listeners that something has happened
---
-2.49.0
-
|
