Why does select() consume so much CPU time in my program?

Question

I have several Java applications that use MINA, and all of them use 20 MINA threads. One application serves around 10,000 concurrent connections, that are usually idle but r

Answer 1

Like the answer from the linked question referred to, the common problem is older JDK bugs. Since you are now on an updated version, I think the this might actually be a hardware bottleneck.

Here is a link to a glassfish issue describing where they discuss the possibility of hardware (network and servers) being the source of the problem.

https://www.java.net//forum/topic/glassfish/glassfish/glassfish-31-deadlock-epollarraywrapperepollwait-how-handle

Also, here is another similar question with no answer yet: SelectorImpl is BLOCKED