SFTP server periodically stalls

[Bob Proulx]

Darren Tucker wrote:
> Terra Frost wrote:
> > Could that be the source of some of the problems? Where else should I be
> > looking?
>
> The "on the hour" nature of it makes me suspicious, though.  Do you do
> anything like roll the syslogs on the hour?

The problem could be quite far away.  Such as for some reason the
firewall rules being reloaded at the top of every hour and for just a
very short time hourly it could be blocking packets.

Try disabling cron and/or systemd-timerd (I think on Ubuntu?) and see
if things magically work at the top of the hour?  If so then it is
something happening via those other periodic tasks.

Bob