Measure http.server render

synapse/http/server.py

@@ -19,6 +19,7 @@ from synapse.api.errors import (
 )
 from synapse.util.logcontext import LoggingContext, PreserveLoggingContext
 from synapse.util.caches import intern_dict
+from synapse.util.metrics import Measure
 import synapse.metrics
 import synapse.events
 
@@ -234,6 +235,7 @@ class JsonResource(HttpServer, resource.Resource):
         request_metrics = RequestMetrics()
         request_metrics.start(self.clock)
 
+        with Measure(self.clock, "http.render"):
             # Loop through all the registered callbacks to check if the method
             # and path regex match
             for path_entry in self.path_regexs.get(request.method, []):