Re:QNX is now free for anything non-commercial, plus there's...
by cesarb on Friday November 08, 2024 @09:51AM
(#42087264)
> Desktop is a typical place where you absolutely don't need realtime.
On a desktop, you want at least soft real-time when playing any sort of multimedia (audio, video, or interactive applications like video games). Otherwise, you get things like glitched audio or dropped frames.
Re:QNX is now free for anything non-commercial, plus there's...
by RandomThoughts3 on Friday November 08, 2024 @10:14AM
(#42087460)
Yes, I agree especially for audio which is a typical exemple of a latency sensitive application (video games are generally purposefully design to be as latency insensitive as possible and will drop frames with no impact on actual gameplay). But a performent application and proper scheduler priorities will bring you there without a RT kernel.
No, not at all. The actual question is who needs realtime.
Desktop is a typical place where you absolutely don't need realtime. You just want latency to be under the user perception threshold but that's easily achievable with a standard kernel. Plus the consequence of failing is basically nil. Why bother with the complexity introduced by a RT kernel?
The latency in modern desktop is not a consequence of unpredictable scheduling. It's just poorly optimised applications. A RT kernel is not a magical solution to that.