Re: [orca-list] systemrequirements for orca?

[Willie Walker <William Walker Sun COM>]

Hi All:

I'm out of the office this week, so my responsiveness will be way down. 
 But, I'd like to address some of the questions Halim has posed.

When I open /usr/bin in nautilus (1367 items on my machine), it takes 
about 15 seconds for anything to appear in the window, regardless of 
whether Orca is running or not.  So, part of the performance problem has 
to do with nautilus itself.

Having said that, there is currently sluggishness that happens in Orca 
as the result of the bursty nature of AT-SPI events when new windows are 
created or old windows are destroyed.  The thing we end up running into 
in these situations is a whole lot of traffic for new children being 
added or removed from the hierarchy.  We're looking into ways to prevent 
this traffic from happening, and we're also analyzing performance 
overall as a goal for GNOME 2.22.

Hope this helps,

Will

Halim Sahin wrote:
> Hello,
> On Mo, Nov 19, 2007 at 11:03:17 +0100, Hermann wrote:
> > Hi,
> > I found that the behavior of Orca under Ubuntu seems sometimes 
> > unpredictable:
>
> Sometimes?
> Let's compare orca to other screenreaders!
> (not jaws).
> Perhaps nvda??
>
> > Actually I use Gutsy on a 2,6 Ghz laptop with 512 MB RAM and about 900 
> > MB swap, and I face no real sluggisness. Some processes start a bit 
> > slower, but nothing worth to worry about.
>
> I don't think so. Sure it works you can get many feedback from the
> supported apps but serious (fast) work is not posible "in my opionion".
>
> > In last spring I used Feisty on my desktop 1 Ghz 256 MB RAM (shared) and 
> > 2 GB of swap. The performance was a true catastrophy. Everything was 
> > sluggish and the swap got filled up to nearly 1 GB.
> > Since people who use a similar machine as my desktop, have reported no 
> > major problems and people who use a much better machine than my laptop 
> > complain sluggisness, I don't know what's going on with Orca and 
> > Ubuntu/DEbian.
> > In an Ubuntu forum I read about problems with NVIDIA graphic cards, and 
> > maybe there are issues with other hardware components.
>
> Luke wrote that gnome is only slow if you start orca so it must be a
> problem with the accessibility stuff not of the graphic card.
> Perhaps one of the main developers can tell us 
> something about these problems?
> Regards
> Halim
>
>
>
> > Hermann
> >
> > --
> > I use grml (http://grml.org/)
> > _______________________________________________
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> > Visit http://live.gnome.org/Orca for more information on Orca