Bug 435534 - npviewer.bin increases load average to 5 and overheats laptop
npviewer.bin increases load average to 5 and overheats laptop
Product: Fedora
Classification: Fedora
Component: nspluginwrapper (Show other bugs)
i686 Linux
low Severity medium
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Assigned To: Martin Stransky
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-03-01 01:00 EST by Alina Silvestrovici Paun
Modified: 2008-03-02 10:45 EST (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2008-03-02 00:46:55 EST
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Description Alina Silvestrovici Paun 2008-03-01 01:00:05 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20080208 Fedora/ Firefox/

Description of problem:
Whenever a webpage with flash loads npviewer.bin is right at the top of top. If I let it run for 3-5 minutes load average increases over 5 and the temperature goes from a typical 50C to 78C. Sometimes then the laptop shuts down. 

Version-Release number of selected component (if applicable):
kernel -

How reproducible:

Steps to Reproduce:
1. Use Firefox to go to a page that uses flash, such as YouTube. 
2. Play video or just browse for a while. 
3. CPU load average increase to the point that everything freezes. 

Actual Results:

Expected Results:

Additional info:
Comment 1 Christopher Aillon 2008-03-01 23:45:48 EST
npviewer.bin is part of nspluginwrapper.
Comment 2 Warren Togami 2008-03-02 00:46:55 EST
Do you have a dual core laptop by chance?

Flash on some web pages easily use 100% of both cores in NORMAL OPERATION.  This
does tend to make things very hot, and some machines without enough cooling
capacity can kill themselves.

By the very fact that high load alone can overheat your laptop, this isn't any
particular software's fault, but rather your cooling capacity.

There is a reason why products like this are sold.  (I don't know about the
effectiveness of this particular model.  I don't own one.)

This is not a bug in firefox or nspluginwrapper.  It is possible that the Flash
plugin is working harder than it needs to due to not making full use of
available CPU/GPU optimizations, but if that is the case (I don't know) then it
is Adobe's problem.

Comment 3 Alina Silvestrovici Paun 2008-03-02 10:45:50 EST
Thank you very much. 

I understand there is a cooling problem with my laptop, however I've seen the
load average go up to 20 if npviewer runs for 10 minutes so it's not just a
spike. Everything freezes up, the mouse does not move, etc. I don't think that's
reasonable even if flash is process intensive. 

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