Explicitly set default cpu number to 1

benchmark/worker/benchmark_client.go

@@ -87,6 +87,8 @@ func setupClientEnv(config *testpb.ClientConfig) {
 	// TODO: change default number of cores used if 1 is not fastest.
 	if config.CoreLimit > 1 {
 		runtime.GOMAXPROCS(int(config.CoreLimit))
+	} else {
+		runtime.GOMAXPROCS(1)
 	}
 }
 

benchmark/worker/benchmark_server.go

@@ -85,8 +85,8 @@ func startBenchmarkServer(config *testpb.ServerConfig, serverPort int) (*benchma
 	numOfCores := 1
 	if config.CoreLimit > 1 {
 		numOfCores = int(config.CoreLimit)
-		runtime.GOMAXPROCS(numOfCores)
 	}
+	runtime.GOMAXPROCS(numOfCores)
 
 	var opts []grpc.ServerOption