OK.
It is like "available connection: 2000" and same for SSL connection.
Because you set max connection is 2000 and when no one current connecting then it will be 2000 available.
I am no where near the point where I will have 2000 simultaneous users on my website. But this is something that will come in handy if I ever get there. Hopefully you are no laughing at me right now
You do not need to do changes for now. It won't cause too much memory usage issue but is big enough to handle traffic.
When your server are too busy, then you may need to do some tuning.