[Lazarus] Threads and Libraries (dll and so)

[Mark Morgan Lloyd]

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

>> 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.
> 
> I would be very interested to see experiments proving that this will 
> make an actual difference in human operator efficiency.

I'm afraid that further experimentation isn't relevant: if you want to 
sell into e.g. drilling platform safety systems then you /have/ to 
adhere to the specifications that they mandate, and checking earlier 
with a colleague confirmed that the timings required weren't close to 
multiples of 100 mSec (please excuse me if I don't go back asking him 
for more detail, I don't want to tie him of for three days' research :-)

Obviously, this was one of the strong points of the cell-oriented PC 
screen: once CPUs were running at 10s of MHz you could get them to flash 
etc. in a predictable way.

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

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