Zimbra high CPU usage with java process

I've been running Zimbra 8.0.2 and got a problem with almost 100% CPU usage with java processes.

I tried many solutions by applying the fix written on the forum but didn't work.... Finally found the solution for this.

http://www.zimbra.com/forums/known-issues/62819-excessive-nio-write-buffering-leads-mailboxd-service-outage.html#post271721

NIO imap, NIOSocketSession leaking. 

IMAP NIO is enabled by default with Zimbra 8.0.2. That's why Zimbra takes high CPU usage.

To disable IMAP NIO, excute the following command.

[root]# su - zimbra

[zimbra]$ zmlocalconfig -e nio_imap_enabled=false

[zimbra]$ zmmailboxdctl restart