[Bug 562802] Re: xorg use cpu 100% sometime with firefox

[bedhead75]

I can confirm that this happens to me running a fresh install of Ubuntu
10.04 (64-bit).  I'm using the 195 .xxx Nvidia drivers that were
installed with jockey.  When running "top", I can see that the %CPU of
Xorg process shoots up when scrolling through certain pages.  This
happens with Compiz on or off and appears independent of visual effects
setting levels.

One thing I've noticed is that his consistently happens with text-rich
pages, such as this very launchpad bug report page, but it doesn't
happen for pages that have a lot of images.  I can open up two tabs in
Firefox, one for this page, and another with mainly images, and I'll
notice that Xorg CPU use shoots up MUCH higher only when this text-rich
is being displayed.  It seems the problem is related to text
rendering/redrawing.

I don't see any errors in the Xorg log, but I'd be happy to post more
information or whatever log reports needed.

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xorg use cpu 100% sometime with firefox
https://bugs.launchpad.net/bugs/562802
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