Re: [orca-list] Navigation sllower with orca and Ubuntu

[David Bolter <david bolter gmail com>]

 Hi Luciano,

One of possible reasons for a performance difference between Windows and 
GNU/Linux is that in Windows a dll can be injected in-process to do very 
quick information gathering. On Linux everything has to cross process 
boundaries, and I don't think dbus makes cross-process performance any 
better. This might be an elephant in the room.

I think someone is working on at-spi2 peer-to-peer communication through 
dbus (Trevor Saunders?) but I can't guess if that will help or how much.

cheers,
David

On 20/09/10 7:04 PM, Luciano de Souza wrote:
> Hello listers,
>
> Few weeks ago, I left Windows and started my adventure in the Linux's 
> wolrd. Ubuntu is a very good system and orca, a powerful screen reader.
>
> Despite this success, I also found some problems. Having recently 
> bought a new computer, with threee cores, running under 3,26 GHZ and 
> 4GB of RAM memory, I expected much more speed.
>
> Firstly, I installed Ubuntu 10.04 in dual boot with Windows 7. In 
> spite of the fact everyone says Linux is faster, in my particular 
> case, Windows 7 with NVDA is significantly faster than Ubuntu and Orca.
>
> In Nautilus, the navigation is not possible when a large ammount of 
> items is displayed. PCman is a file manager more efficient, but in 
> comparison to Windows Explorer, it is still too sllow.
>
> In Thunderbird, a similar issue rises. If a large ammount of items is 
> shown in the inbox, by means of Orca, the navigation is a heavy burden.
>
> A pattern can be recognized: always when the big collections of items 
> comes up, the navigation with Orca is difficult. However, that's not 
> all. Even if there's no large lists, the speed of navigation is 
> meaningly sllower than Windows's speed.
>
> I am happy with my choice and I don't intend to install Windows 
> anymore. Orca is really much better I previously supposed. But, it 
> would be pleasant to receive news saying the new upgraded system or 
> the new upgraded Orca could reduce these difficulties. Could we expect 
> good news?
>
> best regards,
>
> Luciano de Souza
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