--- a/service/reasoning/oneShot	Tue Feb 09 22:01:19 2016 -0800
+++ b/service/reasoning/oneShot	Tue Feb 09 22:10:38 2016 -0800
@@ -3,7 +3,7 @@
 send a statement to the reasoning server for one update cycle. Args
 are s/p/o in n3 notation, with many prefixes predefined here.
 """
-import sys, restkit
+import sys, restkit, time
 s, p, o = sys.argv[1:]
 
 prefixes = {
@@ -22,8 +22,10 @@
 stmt = '%s %s %s .' % (expand(s), expand(p), expand(o))
 print "Sending: %s" % stmt
 
+t1 = time.time()
 reasoning = restkit.Resource("http://bang:9071/")
-reasoning.post("oneShot",
-               headers={"content-type": "text/n3"},
-               payload=stmt)
-
+ret = reasoning.post("oneShot",
+                     headers={"content-type": "text/n3"},
+                     payload=stmt)
+g = float(ret.headers['x-graph-ms'])
+print "%.1f ms for graph update; %.1f ms other overhead" % (g, 1000 * (time.time() - t1) - g)

--- a/service/reasoning/reasoning.py	Tue Feb 09 22:01:19 2016 -0800
+++ b/service/reasoning/reasoning.py	Tue Feb 09 22:10:38 2016 -0800
@@ -291,7 +291,7 @@
 def parseRdf(text, contentType):
     g = Graph()
     g.parse(StringInputSource(text), format={
-        'text/n3': ['n3'],
+        'text/n3': 'n3',
         }[contentType])
     return g
 
@@ -314,7 +314,9 @@
             if not len(g):
                 log.warn("incoming oneshot graph had no statements: %r", self.request.body)
                 return
+            t1 = time.time()
             self.settings.reasoning.inputGraph.addOneShot(g)
+            self.set_header('x-graph-ms', str(1000 * (time.time() - t1)))
         except Exception as e:
             log.error(e)
             raise