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[Aristotelis <1064329@xxxxxxxxxxxxxxxxxx>]

I can confirm this bug but I'll have to disagree with Karl. This problem
seems to be unrelated to the DE in use as I am experiencing it on
Openbox, LXDE and Unity.

I can easily reproduce this bug by accessing any type of HTML5 website.
Here are some examples:

http://fff.cmiscm.com/#!/main
http://sidigital.co/
http://www.whitehouse.gov/issues/preventing-gun-violence

As for CPU load when moving around windows, the CPU usage does seem to
be higher than necessary (~15% on LXDE at the specs outlined below). Is
this how it's supposed to be?

Some additional information:

- reproducible both with FF and Chrome
- mean CPU load on HTML5 website ~30% with Core i5 @ 2.66GHz
- graphics: AMD HD5650 Mobility Radeon on FGLRX (Catalyst 12.6)

-- 
You received this bug notification because you are a member of UBUNTU -
AL - BR, which is subscribed to Chromium Browser.
https://bugs.launchpad.net/bugs/1064329

Title:
  High CPU load (above 50%) on Xorg process when browsing low graphic
  intensive sites

Status in Chromium Browser:
  New
Status in “chromium-browser” package in Ubuntu:
  Confirmed
Status in “xorg-server” package in Ubuntu:
  Invalid

Bug description:
  While using grooveshark.com, I noticed a big bump in the Xorg process CPU usage after selecting its tab. It jumps from the usual >5% to more than 50%.
  The webpage is not graphical intensive, but the interface is all HTML5.
  I'm attaching a video that shows the effect. Note that the recording also adds some weight to the Xorg process, but it's still noticeable, from 20% to 50%.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: chromium-browser 20.0.1132.47~r144678-0ubuntu6
  ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu1
  Architecture: amd64
  Date: Tue Oct  9 19:26:08 2012
  Desktop-Session:
   DESKTOP_SESSION = ubuntu
   XDG_CONFIG_DIRS = /etc/xdg/xdg-ubuntu:/etc/xdg
   XDG_DATA_DIRS = /usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/
  EcryptfsInUse: Yes
  Env:
   MOZ_PLUGIN_PATH = None
   LD_LIBRARY_PATH = None
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  ProcEnviron:
   LANGUAGE=en_SG:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_SG.UTF-8
   SHELL=/bin/bash
  SourcePackage: chromium-browser
  UpgradeStatus: Upgraded to quantal on 2012-05-15 (146 days ago)
  chromium-default: CHROMIUM_FLAGS=""
  gconf-keys: /desktop/gnome/applications/browser/exec = b'/usr/bin/chromium-browser\n'/desktop/gnome/url-handlers/https/command = b'/usr/bin/chromium-browser %s\n'/desktop/gnome/url-handlers/https/enabled = b'true\n'/desktop/gnome/url-handlers/http/command = b'/usr/bin/chromium-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'ubuntu-mono-dark\n'/desktop/gnome/interface/gtk_theme = b'Ambiance\n'

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