From b088aafcae71fa61433f92ce0b139802a9cbd304 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Thu, 21 Jun 2018 06:15:03 +0100 Subject: Log number of events fetched from DB When we finish processing a request, log the number of events we fetched from the database to handle it. [I'm trying to figure out which requests are responsible for large amounts of event cache churn. It may turn out to be more helpful to add counts to the prometheus per-request/block metrics, but that is an extension to this code anyway.] --- synapse/storage/events_worker.py | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'synapse/storage') diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py index 32d9d00ffb..cf4efa9d12 100644 --- a/synapse/storage/events_worker.py +++ b/synapse/storage/events_worker.py @@ -21,6 +21,7 @@ from synapse.events.utils import prune_event from synapse.util.logcontext import ( PreserveLoggingContext, make_deferred_yieldable, run_in_background, + LoggingContext, ) from synapse.util.metrics import Measure from synapse.api.errors import SynapseError @@ -145,6 +146,9 @@ class EventsWorkerStore(SQLBaseStore): missing_events_ids = [e for e in event_ids if e not in event_entry_map] if missing_events_ids: + log_ctx = LoggingContext.current_context() + log_ctx.evt_db_fetch_count += len(missing_events_ids) + missing_events = yield self._enqueue_events( missing_events_ids, check_redacted=check_redacted, -- cgit 1.5.1