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authorRichard van der Hoff <richard@matrix.org>2018-01-12 00:27:14 +0000
committerRichard van der Hoff <richard@matrix.org>2018-01-16 17:23:32 +0000
commit3d12d97415ac6d6a4ab8188af31c7df12c5d19f8 (patch)
treef1fdd0749715818986f82aa89e8887cd53940b12 /synapse/http/server.py
parentMerge branch 'rav/db_txn_time_in_millis' into rav/track_db_scheduling (diff)
downloadsynapse-3d12d97415ac6d6a4ab8188af31c7df12c5d19f8.tar.xz
Track DB scheduling delay per-request
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.
Diffstat (limited to 'synapse/http/server.py')
-rw-r--r--synapse/http/server.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/synapse/http/server.py b/synapse/http/server.py
index 0f30e6fd56..7b6418bc2c 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -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):