Re: [orca-list] Orca performance observations in Firefox

[Janina Sajka <janina rednote net>]

I'm top posting my reply to Jason's report, because I think he's
exposing a missing feature in Orca.

I have observed the behavior Jason reports, but in my experience it
isn't limited to Firefox.

The missing feature, imho, is to skip saying things. If the user presses
down arrow several times quickly, all text in the intervening lines
should be skipped--not spoken.


Unfortunately, as it stands, the fastest way I've found to coarsly
navigate text with up/down arrow, is to wait for speech to begin, kill
it with ctrl, then issue the next arrow key. This is just wrong.

Janina

Jason White writes:
> The following may help to illuminate the hitherto undiagnosed performance
> problems which some have reported with Orca. These observations are with my
> laptop.
>
> Hardware: AMD Athlon64 CPU, 1.8ghz (ondemand CPU frequency governor in effect,
> therefore the CPU frequency is down at 800mhz for most, if not all, of the
> Orca session).
> Baum SuperVario 40 braille display (distributed by Humanware as Brailliant
> 40).
>
> Software: Debian GNU/Linux, Orca 2.22.1, Gnome-speech 0.4.19, eSpeak 1.37,
> , BRLTTY 3.10 (development), Firefox 3 beta 5 as packaged by Debian.
>
> If I load an HTML document in Firefox and press the down arrow key very
> rapidly a number of times, then stop, I find that the speech is often several
> lines behind what is presented on the braille display.
>
> For this test, I have not increased the speech rate from the default.
>
> It appears there is a delay, but that it is manifest in speech only, given
> the above combination of hardware and software.
>
> This doesn't affect me in practice, since my usage patterns don't involve
> rapid movement with the cursor keys (I mostly use searching and structural
> navigation instead). However, this may help to narrow down the causes of what
> others are experiencing.
>
> _______________________________________________
> Orca-list mailing list
> Orca-list gnome org
> http://mail.gnome.org/mailman/listinfo/orca-list
> Visit http://live.gnome.org/Orca for more information on Orca

-- 

Janina Sajka,   Phone:  +1.202.595.7777;        sip:janina a11y org
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