#579490 akregator: high CPU load through nspluginviewer

Package:
akregator
Source:
akregator
Description:
RSS/Atom feed aggregator
Submitter:
Shai Berger
Date:
2015-01-29 01:39:16 UTC
Severity:
normal
#579490#5
Date:
2010-04-27 23:16:23 UTC
From:
To:
When presenting feed items, I expect the presentation
to be somewhat sanitized. I expect no scripts to run,
for example. I've always had the impression that with
akregator this is the case (again: I am limiting the
scope to feed items, not web pages).

Recently I've found a disturbing phenomenon: large
CPU consumption by nspluginviewer invoked by akregator.
Today I've investigated a bit further, and I can link
it to one specific feed (perhaps others too, but this
one does it reliably and that should be enough). The
feed is at http://www.sisterclaire.com/?feed=rss2 and
the current feed document is attached.

The problem item is the currently newest item on this
feed, so first in the attached doc. It includes embedded
Flash, which I suppose is what triggers the bad behavior.

Whenever I open the item in Akregator, I start seeing a
nspluginviewer process taking ~20% CPU. This process is
not gone when I switch to another item (on another feed,
where the item is plain text).

The 20% CPU is bothersome, but I'm more concerned with
the issue of the plugin viewer being started at all.

Thanks,
	Shai.
#579490#10
Date:
2010-04-28 08:09:28 UTC
From:
To:
My guess is that this is a bug in KHTML and/or nspluginviewer.
The same phenomenon can be triggered by deactivating plugins in Konqueror and
then surfing to a website with Flash. e.g. Flash ads.

It seems that "Deactivate Plugins" (which is what Akregator might be using
internally as well) is taking into account too late, i.e. nspluginviewer
decides not to load the plugin while it might be better to not start it at
all. (of course this is just speculation)

Cheers,
Kevin
#579490#17
Date:
2010-04-30 06:54:40 UTC
From:
To:
retitle 579490 akregator: high CPU load through nspluginviewer
thanks
Right; that is, nspluginviewer is started in Konqueror-with-disabled-plugins
as well. It does not consume noticeable amounts of CPU, though, and as long as
it doesn't actually run the plug-ins, that's hardly a bug.

Accordingly, I am making the CPU consumption the main point of this bug.

FWIW, this doesn't happen on akregator which I compiled from KDE trunk (that
is, nspluginviewer is started, but no high CPU load).

Thanks,
	Shai.
#579490#22
Date:
2015-01-29 01:37:49 UTC
From:
To:
tags 579490 +moreinfo
thanks

Hey,

this bug is quite old. Is this still valid?

regads,

sandro

as
#579490#27
Date:
2015-01-29 01:37:49 UTC
From:
To:
tags 579490 +moreinfo
thanks

Hey,

this bug is quite old. Is this still valid?

regads,

sandro

as