10.3 update 5 + Inetd problem

Andrea Brancatelli
Wed, 06 Jul 2016 09:02:37 -0000

Hello everybody,

we're having a curious issue with a machine we recently upgraded to
10.3-RELEASE-p5.

The machine is a pretty "stupid" MX with just sendmail running and
delivering locally mails to an LMTP instance (dbmail lmtp). For various
reasons we don't have a "demonized" LMTPd but we use Inetd to
spawn it
on demand.

After we upgraded the machine from 10.2 to 10.3 all of a sudden the
lmtpd process started (randomly) getting (forever) stuck with 100% cpu
usage in _"uwait"_ state.

On a twin machine with the same setup that is not yet upgraded
(10.1-RELEASE-p3), with the same "ports" versions and identical setup
the problem never happens.

Given that I'm not too much into GDB, Dtrace and all that stuff, what
can I do to try to diagnose the problem better?

Thank you very much.

--

Andrea Brancatelli
Schema31 S.p.a.
Responsabile IT

ROMA - BO - FI - PA
ITALY
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