[Server-devel] RPi3 "poweroff" was consistently ~15sec, now consistently ~1.5min

[James Cameron]

Ninety second delay is double a systemd default timeout for services
not responding to shutdown request.

Three minutes is a quadruple.  We saw similar with OLPC OS and systemd
and fixed the offending services.

It will take a systemd debugging session to find which services are
the cause.

Cause might or might not be MariaDB, but it's a good candidate to
investigate; stop it first using systemctl, then see if shutdown is
faster.  Pre-shutdown shutdowns can be a quick and easy test, but may
still need in-depth debugging.

When shutdown does not work properly, RTC synchronisation may also be
affected.

-- 
James Cameron
http://quozl.netrek.org/