3 ms·
> Data about hand position could be in a write cache somewhere waiting to be flushed, inside monitoring service, inside OS, inside RAID controller, inside stora
by Cyph0n 9y ago
> Data about hand position could be in a write cache somewhere waiting to be flushed, inside monitoring service, inside OS, inside RAID controller, inside storage controller, or even de-prioritized by a busy IO scheduler.
You are vastly overestimating things here.
Critical functionality in a car would rarely if ever involve non-deterministic delays. Furthermore, the OS itself (if there even is one) would be a real-time OS.
But even if we assume such delays are present in a Tesla steering wheel monitoring task, absolutely none of the delays you listed would approach anything near a second...
- wyldfire 9y ago> Critical functionality in a car would rarely if ever involve non-deterministic delays. Furthermore, the OS itself (if there even is one) would be a real-time OS. It might not be safety-design-critical to have a record of the hand-presence sensor with high resolution, merely high enough resolution for safe operation of the vehicle. Flushing these records to storage is an independent function for the sake of service/support/maintenance and is likely not a regulatory requirement. Though regulatory agencies are bound to be interested in the data.