I have a daily spike in swap IO usage at the same that unattended-upgrades runs. Besides that time of day, swap IO is rarely used. I recently tried to uncomment these settings:
Unattended-Upgrade::MinimalSteps "true"; Acquire::http::Dl-Limit "70";
in 50unattended-upgrades in an attempt to slow it down, but it's still a problem. Are there any other settings that will diminish its usage of swap IO? Or is the only solution to upgrade only at shutdowns?
I'm running a linode with 512MB of RAM with Ubuntu 12.04.