Firefox slows down pc......

[Antonio Vargas]

On Tue, 29 Mar 2005 10:32:29 +0200, Marcel J.E. Mol <marcel at mesa.nl> wrote:
> On Tue, Mar 29, 2005 at 10:27:32AM +0200, Marcel J.E. Mol wrote:
> > On Sun, Mar 27, 2005 at 07:46:07PM +0300, Kaspars wrote:
> > >
> > >  Hi,
> > >
> > >  I search and don`t see that there is topic about my problem yet and
> > > don`t know is this here...
> > >  I`m using fresh FC3 reinstalled for week and updated, problem is that
> > > something like to eat my pc power and I found that it is firefox... New
> > > firefox when opened couple tabs (last 5) and all try to download some
> > > site was fulling my memory/processor, top of the "top":
> > > 19.0 10.1   2:10.66 firefox-bin
> > > 10.2 50.3  11:52.26 X
> > > and load start to fullfill: load average: 5.31, 3.43, 1.98
> > >
> > > Last time load was go so high that something kill some process and pc
> > > freeze. Only reboot help...
> > > So I`m thinking what to do, I have all updated etc. Start to think to
> > > compile maybe by my self ff. Don`t know what to do...
> > > Pc is year old Toshiba Satellite with p4 and 256ram.
> >
> >
> > Attached is a testcase that shows high cpu usage for both firefox and mozilla.
> > It contains a few animated gifs. I resize my browser so the bottom part of the
> > page, including the animated gif in it, is outside the window. There are still
> > 4 instances of the same gif visable.  CPU usage in this case is just a few %.
> >
> > Now when I scroll the bottom part into view so that the 5th instance of the gif
> > becomes visible, cpu usage rises to 30% or 40%!
> >
> > If other people can reproduce this I can file a bugzilla...
> 
> I see this effect in mozilla and firefox, but not in konqueror.
> 
> -Marcel

this is cpu cache effects: 4 gifs at XxY rendered resolution fit ok in
data caches but 5th one spills. perhaps konqueror uses less mem and
thus it can fit 5 and not 6, or it already does not fit 4 and it then
feels equally slow with 4 and 5.

> --
>      ======--------         Marcel J.E. Mol                MESA Consulting B.V.
>     =======---------        ph. +31-(0)6-54724868          P.O. Box 112
>     =======---------        marcel at mesa.nl                 2630 AC  Nootdorp
> __==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____
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> 
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-- 
Greetz, Antonio Vargas aka winden of network

http://wind.codepixel.com/

Las cosas no son lo que parecen, excepto cuando parecen lo que si son.