Looks like this might be being caused by flashplugin. After closing a few tabs the problem is no longer recreatable.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1321602 Title: chromium browser chews 100% CPU in epoll_wait() Status in “chromium-browser” package in Ubuntu: New Bug description: This happens frequently (I have a script that monitors CPU usage). $ top -b -n1 | head top - 07:44:06 up 30 min, 3 users, load average: 1.35, 1.08, 0.82 Tasks: 329 total, 2 running, 327 sleeping, 0 stopped, 0 zombie %Cpu(s): 17.4 us, 1.6 sy, 0.4 ni, 80.1 id, 0.5 wa, 0.1 hi, 0.0 si, 0.0 st KiB Mem: 12182444 total, 5215508 used, 6966936 free, 338356 buffers KiB Swap: 12455932 total, 0 used, 12455932 free. 2614244 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 16165 james 20 0 1428628 72860 50624 R 95.5 0.6 3:11.69 chromium-browse 2908 james 20 0 1329964 485940 87724 S 12.7 4.0 2:17.25 firefox 15993 james 20 0 3303180 257376 104592 S 6.4 2.1 0:18.28 chromium-browse $ sudo cat /proc/16165/stack [<ffffffffffffffff>] 0xffffffffffffffff $ sudo strace -fFv -s 1024 -p 16165 Process 16165 attached with 9 threads [pid 16241] futex(0x7fe0ff7fdac4, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 16182] futex(0x7fe0ffffeac4, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...> [pid 16181] futex(0x7fe1279b7f88, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...> [pid 16179] futex(0x7fe1279e7e68, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...> [pid 16178] futex(0x7fe1279d00f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...> [pid 16180] futex(0x7fe1279eeb88, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...> [pid 16177] futex(0x7fe1279fa918, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...> [pid 16176] epoll_wait(3, ^C ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: chromium-browser 34.0.1847.116-0ubuntu2 ProcVersionSignature: Ubuntu 3.15.0-1.5-generic 3.15.0-rc5 Uname: Linux 3.15.0-1-generic x86_64 ApportVersion: 2.14.2-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity Date: Wed May 21 07:42:35 2014 Desktop-Session: DESKTOP_SESSION = ubuntu XDG_CONFIG_DIRS = /etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg XDG_DATA_DIRS = /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/ Env: MOZ_PLUGIN_PATH = None LD_LIBRARY_PATH = None InstallationDate: Installed on 2014-04-11 (39 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140409) SourcePackage: chromium-browser UpgradeStatus: Upgraded to utopic on 2014-05-08 (12 days ago) gconf-keys: /desktop/gnome/applications/browser/exec = b'firefox\n'/desktop/gnome/url-handlers/https/command = b'sensible-browser %s\n'/desktop/gnome/url-handlers/https/enabled = b'true\n'/desktop/gnome/url-handlers/http/command = b'sensible-browser %s\n'/desktop/gnome/url-handlers/http/enabled = b'true\n'/desktop/gnome/session/required_components/windowmanager = b''/apps/metacity/general/compositing_manager = b''/desktop/gnome/interface/icon_theme = b'gnome\n'/desktop/gnome/interface/gtk_theme = b'Clearlooks\n' modified.conffile..etc.default.chromium.browser: [deleted] mtime.conffile..etc.chromium.browser.default: 2014-05-06T16:47:55.748923 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1321602/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
