4 ms·
> Agree completely. Hard real time is possible with Linux, we use it for sub millisecond control of Traffic Lights. Out of curiosity, why do traffic light cont
by arcticfox 8y ago
> Agree completely. Hard real time is possible with Linux, we use it for sub millisecond control of Traffic Lights.
Out of curiosity, why do traffic light controls need to be that precise?
- huehehue 8y agoVenturing a guess -- there's either some X% accuracy standard required by the government for who-knows-what reason, or it's for red light cameras and ticketing systems. "Ironically, the biggest concern with red-light camera systems is that they are so precise. They measure a driver’s speed and exact location within a fraction of a second — but do not leave any wiggle room for the errors of traffic signals such as inconsistent yellow light times"[0] If there's not an accuracy threshold for safety reasons, there's gotta be one when traffic ticketing revenue is on the line (also I guess determining fault at accidents, vehicular manslaughter cases, etc.) [0] https://www.mercurynews.com/2014/06/06/red-light-cameras-how-accurate-are-they/ https://www.mercurynews.com/2014/06/06/red-light-cameras-how...
- loourr 8y agoI don't actually know, but my guess is time drift with respect to other lights.
- jackhack 8y agoresume-driven development?
- lifeisstillgood 8y agoeverything is revenue driven development
- jethro_tell 8y agohe said resume, i.e. working with tech you want to use at your next gig not the tech you need at this gig.
- lifeisstillgood 8y agocould have sworn i read that right ... ah well still, revenue driven development actually makes sense as a thing too ...