Re: can someone suggest why firefox is so &$*&^%*#^&%* slow?

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On Fri, Sep 26, 2014 at 07:36:19PM -0700, Adam Williamson wrote:
> On Wed, 2014-09-24 at 10:44 -0400, Robert P. J. Day wrote:
> >   i am at my wit's end with firefox on my fedora rawhide system -- to
> > say it's nad-grindingly slow would be charitable. just now, i tried
> > clicking on another tab ... some 30 seconds later, i am still waiting
> > for the tab to change, oh, wait, there it is.
> > 
> >   watching any sort of youtube video is excruciating ... while audio
> > is typically, i will frequently get *maybe* one frame change a second,
> > i kid you not. i frequently get javascripts that are not responding,
> > and i'm asked whether i want to wait for them.
> > 
> >   is there *something* i can do to debug this? what firefox
> > configuration settings should i be looking at? i'm willing to try
> > anything because, at this point, firefox is utterly unusable. even
> > something as simple as scrolling in a window is painfully slow.
> > 
> >   oh, and i'm on a quad core i7, so i'm pretty sure horsepower isn't
> > the problem.
> 
> FWIW, I've been seeing some odd 'laggy' behaviour in F21 on my desktop
> lately, which does mostly seem to be in Firefox. I do have sixteen
> zillion tabs open, but I do that a lot and it's not happened before, and
> RAM isn't exhausted (I have 16GB, using about 8GB). I don't have Flash
> installed. Not had time to look into it in more detail yet, but it does
> seem like something squiffy is going on.
> 
> The symptoms are basically that things like switching tabs, highlighting
> text, copy/pasting, or input appearing after I start to type lag by 1-3
> seconds, and sometimes presses/characters that occur within the lag time
> are lost.

I'm having problems with FF on Fedora 19 that just started recently,
maybe related, maybe not.  In my case, the entire desktop is
freezing--even the mouse cursor won't move for 5-10 seconds.  It
always seems to happen when opening a new blank tab in FF.
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