[Lazarus] Threads and Libraries (dll and so)

[Mark Morgan Lloyd]

Michael Van Canneyt wrote:
> On Tue, 4 Feb 2014, Mark Morgan Lloyd wrote:

> But complicated information like statistics or information of 20 cameras,
> needs time to be processed by the brain in order to react on it. There 
> is therefor no need to have it refreshed in intervals that the brain 
> cannot discern anyway. What could possibly be achieved with displaying 
> information of 20 cameras at 60 FPS ? Nothing, unless you want to brag 
> about your hardware.

I'm afraid that's... highly questionable. The more video streams (etc.) 
that are visible the smoother you want the overall presentation to be: 
the human brain is /very/ sensitive to small timing differences. In 
addition, there are standards for e.g. flashing indicators in 
safety-critical applications which are specified with much finer 
resolution than 100 mSec.

So a 10Hz update is totally out of the question these days: 100Hz would 
be more realistic.

But I still don't entirely agree with MichaelS: just because something 
is highly desirable doesn't mean it's attainable, and some sort of 
double-buffering would probably be a good compromise.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]