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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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7
synapse/http/server.py
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@ -102,6 +102,10 @@ response_db_txn_duration = metrics.register_counter(
),
)
# seconds spent waiting for a db connection, when processing this request
response_db_sched_duration = metrics.register_counter(
"response_db_sched_duration_seconds", labels=["method", "servlet", "tag"]
)
_next_request_id = 0
@ -381,6 +385,9 @@ class RequestMetrics(object):
response_db_txn_duration.inc_by(
context.db_txn_duration_ms / 1000., request.method, self.name, tag
)
response_db_sched_duration.inc_by(
context.db_sched_duration_ms / 1000., request.method, self.name, tag
)
class RootRedirect(resource.Resource):