Bug 92937 - Viewing some pages causes high CPU load (no plugins)
Summary: Viewing some pages causes high CPU load (no plugins)
Status: RESOLVED REMIND
Alias: None
Product: konqueror
Classification: Applications
Component: khtml (show other bugs)
Version: unspecified
Platform: RedHat Enterprise Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Konqueror Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-11-08 22:59 UTC by Mikhail Ramendik
Modified: 2008-05-15 04:46 UTC (History)
0 users

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Description Mikhail Ramendik 2004-11-08 22:59:49 UTC
Version:            (using KDE KDE 3.3.1)
Installed from:    RedHat RPMs
Compiler:          gcc 3.2.2 
OS:                Linux

I encounter high CPU loads when viewing certain (not all) pages. Sometimes this happens even when the page is opened without pictures, and sometimes only when pictures are loaded.

I have disabled plugins, so this is not a plugin issue.

For example, one can open  http://www.tomshardware.com/cpu/index.html 

Even with this page alone Konqueror eats 10-15% CPU here (Celeron 2400). If I also open 2 or 3 articles from there (in new tabs or windows), the Konqueror CPU load is about 50%; and it seems to grow with every opened page on this site.

This also sometimes happens on some other sites (like LiveJournal friends view), but on tomshardware the effect seems 100% reproducible.

Note that when I do scrolling on this site, the load rises to 100% - but much of that is X. This may be a konqueror/X interaction issue. (My X server is XFree86 4.3.) But on the standby (no scrolling) CPU load, it seems to be a Konqueror/khtml issue, because it only happens on some sites.
Comment 1 Allan Sandfeld 2004-11-09 00:52:16 UTC
I can confirm the behavior.
Comment 2 Mikhail Ramendik 2005-09-05 02:18:30 UTC
Apparently gone in 3.4.2.
Comment 3 Mikhail Ramendik 2005-09-05 02:21:46 UTC
Retested with tomshardware and the bug is still there in 3.4.2 :(
Comment 4 Maksim Orlovich 2006-01-19 19:36:20 UTC
hmm, can't confirm, almost-3.5.1
Comment 5 Simon Zilliken 2006-08-06 11:46:05 UTC
Problem exists still in 3.5.4 with some pages. I don't get this behaviour with the page mentioned above, but still opening http://www.automotorundsport.de lets the cpu load rise up to 100 % (about 85 % X, 15 % Konqueror).
I think it's the news-ticker that causes this problem. Trie moving the mouse pointer onto a news-headline. The ticker will stop and the load immediately goes down to a normal level.
Comment 6 Simon Zilliken 2006-10-12 16:20:32 UTC
The news-ticker problem seems to be solved in 3.5.5
Comment 7 Michael Leupold 2008-04-13 19:42:02 UTC
Unfortunately the sites have changed in the meantime and thus the behaviour reported is no longer observable. Do you still face problems like this on similar sites?
Comment 8 A. Spehr 2008-05-15 04:46:03 UTC
If can give us updated information, and this still exists in current version, can you reopen this bug? Thanks.