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Track DB scheduling delay per-request

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For each request, track the amount of time spent waiting for a db
connection. This entails adding it to the LoggingContext and we may as well add
metrics for it while we are passing.
This commit is contained in:
Richard van der Hoff 2018-01-12 00:27:14 +00:00
parent 0f5d2cc37c
commit 3d12d97415
5 changed files with 43 additions and 4 deletions
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4
synapse/storage/_base.py
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@ -347,7 +347,9 @@ class SQLBaseStore(object):
def inner_func(conn, *args, **kwargs):
with LoggingContext("runWithConnection") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
sched_duration_ms = time.time() * 1000 - start_time
sql_scheduling_timer.inc_by(sched_duration_ms)
current_context.add_database_scheduled(sched_duration_ms)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")