Public visitors to a site being hosted on Concrete5 CMS platform are given a session cookie. Even when there is nothing to interact with on the site itself.
Since session states are a performance drain, how can it be turned off in concrete5?
And if not, why is it needed in the first place?
I don't know why it's needed in the first place (for guests who aren't logged in). It has been "discussed" by the Concrete5 core team before: http://www.concrete5.org/community/forums/chat/european-directive-that-prohibits-businessandrsquo-websites-down/
...if you read through that, you'll see the following "reasons" given:
Umm... so yeah, who the heck knows. I'd think it shouldn't be a problem. But there's no easy switch you can turn on or off to disable them -- you'd need to go through the code and customize the system to make this work.