There is a test on connection server 7.2. With 4core CPU and 8GB memory, we sent 1000 http requests every second and there is 5% http request losted. After changing configuration for connection server, the lost rate drop to 0.86%.
Here are some suggestions to improve connection server performance
Reset parameters in connection server configuration file cxserver.conf. (..\conf\cxserver.conf)
Adjust parameters max-connection-pool-size and max-wait-queue-size
Change the default JVM settings. (increase memory for JVM properly)
In this case, I created a new file named startMyConnectionServer.bat file with below code: