[Dovecot] Problem with imap running at 100%

[Edgar Fuß]

> an imap process running at 100%, kill -9 was unable to kill it.
I'm no a Linux expert, but from a BSD perspective, that seems to contradict each other. Either the process is doing an uninterruptable sleep or consumes CPU time. As said, I'm not a Linux expert, but can you find out what state the process is in and, if waiting, what's the wait channel?