** Branch linked: lp:ubuntu/wily-proposed/qtmir -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1479250
Title: unity8 process using CPU when the phone is idle Status in QtMir: In Progress Status in The Ubuntu Power Consumption Project: New Status in qtmir package in Ubuntu: In Progress Status in unity8 package in Ubuntu: New Bug description: top reports the unity8 process is consuming about 1% CPU even when the phone is idle (screen on): 11688 phablet 20 0 482184 101352 44872 S 1.0 5.4 0:37.10 unity8 This makes unity8 the top consumer of CPU. 1% on modern CPUs like you find in phones is actually a very large amount of work going on (~10 million clock ticks spent executing instructions per second on a 1GHz core). $ system-image-cli -i current build number: 272 device name: mako channel: ubuntu-touch/devel-proposed/ubuntu last update: 2015-07-29 05:53:01 version version: 272 version ubuntu: 20150729 version device: 20150708 version custom: 20150729 Running eventstat shows this CPU time is being used in 5 events per second: Event/s PID Task Init Function Callback 36.36 0 [swapper/0] hrtimer_start_range_ns tick_sched_timer 5.05 11688 unity8 hrtimer_start_range_ns hrtimer_wakeup So it sounds like QtMir's frame dropper is the culprit. To manage notifications about this bug go to: https://bugs.launchpad.net/qtmir/+bug/1479250/+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
