3 ms·
even in the case of soft-realtime we don't say the system is real-time because it's fast. We say its realtime because majority of the time it meet its deadline.
by skyde 4y ago
even in the case of soft-realtime we don't say the system is real-time because it's fast. We say its realtime because majority of the time it meet its deadline.
- karmakaze 4y agoYes, at the same time I don't know if I'd characterize a soft-realtime system as slow. One way to meet deadlines is by being very efficient/fast, while keeping variance low (e.g. no stop the world gc).
- netr0ute 4y agoBy that definition, a phone call that always takes 10 seconds for one side to hear the other is realtime.
- AlotOfReading 4y agoThat would indeed be a realtime system by common definitions as long as that latency is guaranteed. Audio and video are commonly considered soft-realtime domains for exactly that reason.
- unsafecast 4y agoYep. If you mean low-latency, say that. Real-time is an unfortunate name, but it means what it means.
- numpad0 4y agoAnd phone … callthatju arousmpnnd is n’t realtime. Technically not relevant but I know that a lot of early handhelds that repurposed RTOS for GUI felt slow, jumpy and unresponsive, perhaps because everything was polled? In that sense RTOS can be slow.
- unsafecast 4y agoI think it felt that way because of bad design + slow hardware. You see the exact same thing by installing a modern windows version or some desktop like GNOME to low-end computers.
- jcelerier 4y agoWho's that "we" ? For anyone I've worked with, real-time also implied "reaction time is faster than human perception"