From 941dc3db13f1c4c4b89da14a0dc60b4f7b54228c Mon Sep 17 00:00:00 2001 From: David Robertson Date: Wed, 15 Jun 2022 15:19:49 +0100 Subject: Track a histogram of state res durations (#13036) --- synapse/state/__init__.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'synapse/state') diff --git a/synapse/state/__init__.py b/synapse/state/__init__.py index da25f20ae5..9d3fe66100 100644 --- a/synapse/state/__init__.py +++ b/synapse/state/__init__.py @@ -444,6 +444,15 @@ _biggest_room_by_db_counter = Counter( "expensive room for state resolution", ) +_cpu_times = Histogram( + "synapse_state_res_cpu_for_all_rooms_seconds", + "CPU time (utime+stime) spent computing a single state resolution", +) +_db_times = Histogram( + "synapse_state_res_db_for_all_rooms_seconds", + "Database time spent computing a single state resolution", +) + class StateResolutionHandler: """Responsible for doing state conflict resolution. @@ -609,6 +618,9 @@ class StateResolutionHandler: room_metrics.db_time += rusage.db_txn_duration_sec room_metrics.db_events += rusage.evt_db_fetch_count + _cpu_times.observe(rusage.ru_utime + rusage.ru_stime) + _db_times.observe(rusage.db_txn_duration_sec) + def _report_metrics(self) -> None: if not self._state_res_metrics: # no state res has happened since the last iteration: don't bother logging. -- cgit 1.4.1