I was able to confirm this by downgrading the version of apache2 installed to the one from the -release pocket and then running unattended upgrades:
5867 root 39 19 284732 15232 9748 S 0.0 0.4 0:00.04 apache2 5871 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2 5872 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2 5873 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2 5874 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2 5875 www-data 39 19 284764 5916 420 S 0.0 0.2 0:00.00 apache2 ** Changed in: unattended-upgrades (Ubuntu) Status: New => In Progress ** Changed in: unattended-upgrades (Ubuntu) Importance: Undecided => High ** Changed in: unattended-upgrades (Ubuntu) Assignee: (unassigned) => Brian Murray (brian-murray) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/1422345 Title: stop being nice does not work Status in unattended-upgrades package in Ubuntu: In Progress Bug description: Since version 0.81, unattended-upgrades does the upgrade calculation with os.nice(19). To finish the nice block in /usr/bin/unattended-upgrade, the following call is used: os.nice(0) Since the argument is interpreted as incremental, this should be: os.nice(-19) Without this fix, this problem is back: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701850 "unattended-upgrades: nice 19/ionice idle inherited by restarted processes" Found in the trusty version (0.82.1ubuntu2), but probably in any version (including Debian) since 0.81. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1422345/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp