This is not an bug in qtchooser. ** Package changed: qtchooser (Ubuntu) => qtdeclarative-opensource-src (Ubuntu)
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtchooser in Ubuntu. https://bugs.launchpad.net/bugs/1210124 Title: qmlscene is busy and there is heap growth when running idle apps Status in qtdeclarative-opensource-src package in Ubuntu: New Bug description: I've been using health-check from my PPA (ppa:colin-king/white) to observe idle states of various phone apps and I'm seeing poll/epoll spinning at ~10 polls a second and some heap growth even when idle. 1. polling on idle consumes power, although small, it will accumulate when a user has multiple idle apps running 2. the heap growth is slow but will add up if an app is running for many hours. Attached is the system activity on two idle apps: 1. /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene /usr/share/ubuntu- filemanager-app/ubuntu-filemanager-app 2. /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene /usr/share/ubuntu- calculator-app/ubuntu-calculator-app I'm observing: Top polling system calls: PID Process Syscall Rate/Sec Infinite Zero Minimum Maximum Average Timeouts Timeouts Timeout Timeout Timeout 2666 qmlscene poll 5.6278 0 4 0.0 sec 3.0 sec 1.7 sec 2674 qmlscene epoll_wait 4.9650 0 0 5.0 sec 5.0 sec 5.0 sec 2686 qmlscene epoll_wait 0.2000 0 0 5.0 sec 5.0 sec 5.0 sec Total 10.7928 0 4 so ~10Hz of polling. Also, heap growth: Change in memory (K/second): PID Process Type Size RSS PSS 2666 qmlscene Heap 0.00 0.39 0.39 (growing slowly) Since the RSS + PSS are growing I guess this is an anonymous mem- mapped region that is slowly filling up and populating physical pages and at sometime we may run out and the underying user space memory allocator will map a larger region for more heap. But as it is, it seems that the physical pages are slowly getting used which generally points to a slow leak somewhere. I suggest running valgrind on qmlscene to see if it can spot any heap leakages. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtdeclarative-opensource-src/+bug/1210124/+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
