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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/http/site.py
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@ -67,13 +67,14 @@ class SynapseRequest(Request):
ru_utime, ru_stime = context.get_resource_usage()
db_txn_count = context.db_txn_count
db_txn_duration_ms = context.db_txn_duration_ms
db_sched_duration_ms = context.db_sched_duration_ms
except Exception:
ru_utime, ru_stime = (0, 0)
db_txn_count, db_txn_duration_ms = (0, 0)
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %dms (%dms, %dms) (%dms/%d)"
" Processed request: %dms (%dms, %dms) (%dms/%dms/%d)"
" %sB %s \"%s %s %s\" \"%s\"",
self.getClientIP(),
self.site.site_tag,
@ -81,6 +82,7 @@ class SynapseRequest(Request):
int(time.time() * 1000) - self.start_time,
int(ru_utime * 1000),
int(ru_stime * 1000),
db_sched_duration_ms,
db_txn_duration_ms,
int(db_txn_count),
self.sentLength,