Was this machine up and running at the weekend when the leap second was added? You could try the workaround for that and see if it helps
service ntpd ... [by TrevorH]
on 07/04/2012 – Made popular on 07/04/2012
@STUARTDisclaimer: I don't (yet) use systemd at all. I just started doing some reading with a view to switching this weekend (bank holiday on Monday).I think ntpd.service is different because that has an Install section so enabling it should have been effective.See https://wiki.archlinux.org/index.php/Nt … emd_system.I'm not clear how systemd handles daemons.
I am running MySQL on an Amazon Linux AMI. There is nothing connected to it. There are no connections and no other applications running that use MySQL. It is completely idle, but yet, top is reporting that mysql is using 62% of the CPU? Why is this happening and how do I fix it?