We have an application that is using the JBoss HTTP connector without Apache in front. Because keep-alive timeout is not configurable we have to accept defaults which means for a request that takes 10ms to complete we seem to dedicate a thread for 15 seconds. It is impossible to balance performance with concurrency without this option.
Other options are missing from JBossAs7 that are required for performance.
max keep alive requests
tcp no delay
max http header size
These should be configurable in the connector XML having some parameters available via system properties is inconvenient.
max header size and keep alive timeout are the showstoppers for our use of JBoss.