[webizen]

There are not the same.

For example, Max Connections in Server Tuning (http://www.litespeedtech.com/docs/we...maxConnections) defines maximum concurrent TCP connections can be accepted by server from clients.

if PHP suEXEC is enabled, PHP suEXEC Max Conn (http://www.litespeedtech.com/docs/we...pSuExecMaxConn) specifies the maximum concurrent PHP requestes can be processed when run PHP script in suEXEC mode. This is the maximum number of PHP processes each user can get. For a busy site, this can be set to 200-300.

Max Connections in External App (http://www.litespeedtech.com/docs/we...apps/#maxConns) specifies the maximum concurrent connections that can be established between the web server and an external application. This setting controls how many requests can be processed concurrently by an external application.