[Dovecot] unkillable imap process(es) with high CPU-usage

[Timo Sirainen]

On Thu, 2008-12-11 at 23:08 +0100, Edgar Fuß wrote:
> > If you can't kill a process with -9, the bug is in the kernel and
> > there's nothing Dovecot can do about it. User spaces processes can't
> > create unkillable processes unless something's broken.
> It just means the process is doing an uninterruptable sleep (in BSD notation, a tsleep() without PCATCH set). This may be an I/O operation, resource shortage etc. and needn't be a kernel bug.

Yes, but I'd also argue that any long enough uninterruptable sleep is a
bug. :) I hate it when NFS operations hang..

Anyway, Arno's ps output showed the process to be in R state, not in D
state. Unless that was some kind of a copy&paste mistake that makes it
sound more like a bug.
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