try uvloop

mlat/server/main.py

@@ -21,13 +21,15 @@
 """
 
 import asyncio
+import uvloop
+asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+
 import logging
 import signal
 import argparse
 
 from mlat.server import jsonclient, output, coordinator, leakcheck
 
-
 def hostport(s):
  parts = s.split(':')
  if len(parts) != 2:

mlat/server/util.py

@@ -28,7 +28,7 @@
 def fuzzy(t):
  return round(random.uniform(0.9*t, 1.1*t), 0)
 
-completed_future = asyncio.Future()
+completed_future = asyncio.get_event_loop().create_future()
 completed_future.set_result(True)