A couple more data points: Last week, I rebooted my machine and logged in right away. polkitd was only using 7 MB of memory:
$ ps aux | grep polkitd | grep -v grep root 1219 0.1 0.0 281164 7244 ? Sl 16:36 0:00 /usr/lib/policykit-1/polkitd --no-debug Two days later, polkitd was using only marginally more memory: $ uptime 17:08:55 up 2 days, 32 min, 2 users, load average: 1.42, 0.78, 0.37 $ ps aux | grep polkitd | grep -v grep root 1219 0.0 0.0 291208 7664 ? Sl Jun30 0:00 /usr/lib/policykit-1/polkitd --no-debug On Friday, I installed updates and then rebooted without logging in. This morning, before logging in, polkitd was already using nearly 1 GB of memory: $ uptime 09:09:38 up 3 days, 15:57, 1 user, load average: 0.06, 0.05, 0.05 $ ps aux | grep polkitd | grep -v grep root 1034 0.4 11.2 1137788 912732 ? Sl Jul02 23:23 /usr/lib/policykit-1/polkitd --no-debug $ date Mon Jul 6 09:11:17 EDT 2015 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1470235 Title: PolicyKit high memory usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/policykit-1/+bug/1470235/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs