diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py
index 5c5a73b73c..6996d6b695 100644
--- a/synapse/federation/transaction_queue.py
+++ b/synapse/federation/transaction_queue.py
@@ -168,7 +168,7 @@ class TransactionQueue(object):
# fire off a processing loop in the background
run_as_background_process(
- "process_transaction_queue",
+ "process_event_queue_for_federation",
self._process_event_queue_loop,
)
@@ -434,14 +434,11 @@ class TransactionQueue(object):
logger.debug("TX [%s] Starting transaction loop", destination)
- # Drop the logcontext before starting the transaction. It doesn't
- # really make sense to log all the outbound transactions against
- # whatever path led us to this point: that's pretty arbitrary really.
- #
- # (this also means we can fire off _perform_transaction without
- # yielding)
- with logcontext.PreserveLoggingContext():
- self._transaction_transmission_loop(destination)
+ run_as_background_process(
+ "federation_transaction_transmission_loop",
+ self._transaction_transmission_loop,
+ destination,
+ )
@defer.inlineCallbacks
def _transaction_transmission_loop(self, destination):
diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index dc9eca7d15..5fe1ca2de7 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -19,6 +19,8 @@ from canonicaljson import json
from twisted.internet import defer
+from synapse.metrics.background_process_metrics import run_as_background_process
+
from . import engines
from ._base import SQLBaseStore
@@ -87,10 +89,14 @@ class BackgroundUpdateStore(SQLBaseStore):
self._background_update_handlers = {}
self._all_done = False
- @defer.inlineCallbacks
def start_doing_background_updates(self):
- logger.info("Starting background schema updates")
+ run_as_background_process(
+ "background_updates", self._run_background_updates,
+ )
+ @defer.inlineCallbacks
+ def _run_background_updates(self):
+ logger.info("Starting background schema updates")
while True:
yield self.hs.get_clock().sleep(
self.BACKGROUND_UPDATE_INTERVAL_MS / 1000.)
diff --git a/synapse/storage/client_ips.py b/synapse/storage/client_ips.py
index b78eda3413..77ae10da3d 100644
--- a/synapse/storage/client_ips.py
+++ b/synapse/storage/client_ips.py
@@ -19,6 +19,7 @@ from six import iteritems
from twisted.internet import defer
+from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.util.caches import CACHE_SIZE_FACTOR
from . import background_updates
@@ -93,10 +94,16 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
self._batch_row_update[key] = (user_agent, device_id, now)
def _update_client_ips_batch(self):
- to_update = self._batch_row_update
- self._batch_row_update = {}
- return self.runInteraction(
- "_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
+ def update():
+ to_update = self._batch_row_update
+ self._batch_row_update = {}
+ return self.runInteraction(
+ "_update_client_ips_batch", self._update_client_ips_batch_txn,
+ to_update,
+ )
+
+ run_as_background_process(
+ "update_client_ips", update,
)
def _update_client_ips_batch_txn(self, txn, to_update):
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 2aaab0d02c..4ff0fdc4ab 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -33,12 +33,13 @@ from synapse.api.errors import SynapseError
# these are only included to make the type annotations work
from synapse.events import EventBase # noqa: F401
from synapse.events.snapshot import EventContext # noqa: F401
+from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.events_worker import EventsWorkerStore
from synapse.types import RoomStreamToken, get_domain_from_id
from synapse.util.async import ObservableDeferred
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
from synapse.util.frozenutils import frozendict_json_encoder
-from synapse.util.logcontext import PreserveLoggingContext, make_deferred_yieldable
+from synapse.util.logcontext import make_deferred_yieldable
from synapse.util.logutils import log_function
from synapse.util.metrics import Measure
@@ -155,11 +156,8 @@ class _EventPeristenceQueue(object):
self._event_persist_queues[room_id] = queue
self._currently_persisting_rooms.discard(room_id)
- # set handle_queue_loop off on the background. We don't want to
- # attribute work done in it to the current request, so we drop the
- # logcontext altogether.
- with PreserveLoggingContext():
- handle_queue_loop()
+ # set handle_queue_loop off in the background
+ run_as_background_process("persist_events", handle_queue_loop)
def _get_drainining_queue(self, room_id):
queue = self._event_persist_queues.setdefault(room_id, deque())
diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py
index 67433606c6..f28239a808 100644
--- a/synapse/storage/events_worker.py
+++ b/synapse/storage/events_worker.py
@@ -25,6 +25,7 @@ from synapse.events import EventBase # noqa: F401
from synapse.events import FrozenEvent
from synapse.events.snapshot import EventContext # noqa: F401
from synapse.events.utils import prune_event
+from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.util.logcontext import (
LoggingContext,
PreserveLoggingContext,
@@ -322,10 +323,11 @@ class EventsWorkerStore(SQLBaseStore):
should_start = False
if should_start:
- with PreserveLoggingContext():
- self.runWithConnection(
- self._do_fetch
- )
+ run_as_background_process(
+ "fetch_events",
+ self.runWithConnection,
+ self._do_fetch,
+ )
logger.debug("Loading %d events", len(events))
with PreserveLoggingContext():
diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py
index 4abca91f6d..465adc54a8 100644
--- a/synapse/util/caches/expiringcache.py
+++ b/synapse/util/caches/expiringcache.py
@@ -16,6 +16,7 @@
import logging
from collections import OrderedDict
+from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.util.caches import register_cache
logger = logging.getLogger(__name__)
@@ -63,7 +64,10 @@ class ExpiringCache(object):
return
def f():
- self._prune_cache()
+ run_as_background_process(
+ "prune_cache_%s" % self._cache_name,
+ self._prune_cache,
+ )
self._clock.looping_call(f, self._expiry_ms / 2)
diff --git a/synapse/util/distributor.py b/synapse/util/distributor.py
index 734331caaa..d91ae400eb 100644
--- a/synapse/util/distributor.py
+++ b/synapse/util/distributor.py
@@ -75,6 +75,10 @@ class Distributor(object):
self.pre_registration[name].append(observer)
def fire(self, name, *args, **kwargs):
+ """Dispatches the given signal to the registered observers.
+
+ Runs the observers as a background process. Does not return a deferred.
+ """
if name not in self.signals:
raise KeyError("%r does not have a signal named %s" % (self, name))
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