The description seems to indicate that this bug was most likely fixed upstream.
Given the age of the bug, I'll assume this is not relevant any longer. Please
file a new bug if you're facing similar issues.
** Changed in: chromium-browser (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/813946
Title:
Huge No. of interrupts by SignalSender in Chromium-Browser
Status in chromium-browser package in Ubuntu:
Invalid
Bug description:
Huge number of interrupts are being generated by Chromium-Browser with the
heading 'SignalSender' and 'chromium-browser' as reported by powertop.
Steps:
1. Open powertop and keep it ready in background.
2. Open chromium browser and open a tab or two.
3. Monitor the interrupts in powertop and look for number of interrupts under
'chromium-browser' and 'SignalSender'.
4. Close and observe powertop again. The number of interrupts are largely
reduced.
5. Open something with flash or video content. The number of interrupts again
goes beyond the roof and CPU usage becomes very high.
It seems to be a upstream bug and moving to version 14 or above seems
to have resolved this regression. Needs to be tested and recent
versions made available in the Ubuntu repository. I have not myself
tested it, because of lack to tools and expertise, but the upstream
bug reports in chromium-browser project seems to indicate so.
What you expected to happen - No. of interrupts / CPU usage should be
under reasonable limits.
What happened instead - High CPU usage.
$ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10
$ apt-cache policy chromium-browser
chromium-browser:
Installed: 12.0.742.112~r90304-0ubuntu0.10.10.1
Candidate: 12.0.742.112~r90304-0ubuntu0.10.10.1
Version table:
*** 12.0.742.112~r90304-0ubuntu0.10.10.1 0
500 http://archive.ubuntu.com/ubuntu/ maverick-updates/universe amd64
Packages
500 http://archive.ubuntu.com/ubuntu/ maverick-security/universe
amd64 Packages
100 /var/lib/dpkg/status
6.0.472.63~r59945-0ubuntu2 0
500 http://archive.ubuntu.com/ubuntu/ maverick/universe amd64 Packages
$ uname -a
Linux ubnode6 2.6.35-30-server #54-Ubuntu SMP Tue Jun 7 20:13:05 UTC 2011
x86_64 GNU/Linux
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