Add uvloop argument

src/python/grpcio_tests/tests_aio/benchmark/worker.py

@@ -46,6 +46,13 @@ if __name__ == '__main__':
                         type=int,
                         dest='port',
                         help='The port the worker should listen on')
+    parser.add_argument('--uvloop',
+                        action='store_true',
+                        help='Use uvloop or not')
     args = parser.parse_args()
 
+    if args.uvloop:
+        import uvloop
+        uvloop.install()
+
     asyncio.get_event_loop().run_until_complete(run_worker_server(args.port))

src/python/grpcio_tests/tests_aio/benchmark/worker_servicer.py

@@ -33,7 +33,7 @@ from tests_aio.benchmark import benchmark_client, benchmark_servicer
 
 _NUM_CORES = multiprocessing.cpu_count()
 _WORKER_ENTRY_FILE = os.path.join(
-    os.path.split(os.path.abspath(__file__))[0], '/worker.py')
+    os.path.split(os.path.abspath(__file__))[0], 'worker.py')
 
 _LOGGER = logging.getLogger(__name__)