2 files changed, 31 insertions, 10 deletions
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index d8d0df7e41..c227265190 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -496,11 +496,31 @@ class SynapseSite(Site):
 
 
 def run(hs):
+    PROFILE_SYNAPSE = False
+    if PROFILE_SYNAPSE:
+        def profile(func):
+            from cProfile import Profile
+            from threading import current_thread
+
+            def profiled(*args, **kargs):
+                profile = Profile()
+                profile.enable()
+                func(*args, **kargs)
+                profile.disable()
+                ident = current_thread().ident
+                profile.dump_stats("/tmp/%s.%s.%i.pstat" % (
+                    hs.hostname, func.__name__, ident
+                ))
+
+            return profiled
+
+        from twisted.python.threadpool import ThreadPool
+        ThreadPool._worker = profile(ThreadPool._worker)
+        reactor.run = profile(reactor.run)
 
     def in_thread():
         with LoggingContext("run"):
             change_resource_limit(hs.config.soft_file_limit)
-
             reactor.run()
 
     if hs.config.daemonize:
diff --git a/synapse/app/synctl.py b/synapse/app/synctl.py
index 0a2b0d6fcd..1f7d543c31 100755
--- a/synapse/app/synctl.py
+++ b/synapse/app/synctl.py
@@ -27,20 +27,21 @@ CONFIGFILE = "homeserver.yaml"
 GREEN = "\x1b[1;32m"
 NORMAL = "\x1b[m"
 
+if not os.path.exists(CONFIGFILE):
+    sys.stderr.write(
+        "No config file found\n"
+        "To generate a config file, run '%s -c %s --generate-config"
+        " --server-name=<server name>'\n" % (
+            " ".join(SYNAPSE), CONFIGFILE
+        )
+    )
+    sys.exit(1)
+
 CONFIG = yaml.load(open(CONFIGFILE))
 PIDFILE = CONFIG["pid_file"]
 
 
 def start():
-    if not os.path.exists(CONFIGFILE):
-        sys.stderr.write(
-            "No config file found\n"
-            "To generate a config file, run '%s -c %s --generate-config"
-            " --server-name=<server name>'\n" % (
-                " ".join(SYNAPSE), CONFIGFILE
-            )
-        )
-        sys.exit(1)
     print "Starting ...",
     args = SYNAPSE
     args.extend(["--daemonize", "-c", CONFIGFILE])