[Dovecot] unkillable imap process(es) with high CPU-usage
tss at iki.fi
Thu Dec 11 16:36:34 EET 2008
On Thu, 2008-12-11 at 11:36 +0100, Arno Wald wrote:
> I am having a problem with my dovecot-daemon. It is forking one or more
> (I saw up to perhaps 8 of them) imap processes under my user name. These
> processes are consuming a lot of CPU time and are not killable:
> > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> > 8616 arno 20 0 2900 1600 1204 R 98 0.2 1196:38 imap
> Stopping dovecot does not quit these processes. Killing them (even "kill
> -9" as root) is not possible. The only solution to get rid of them is to
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.
Although you could see if "strace -p <pid>" prints something. It's
doubtful though if you can't kill the process.
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