3 ms·
NTP. By any other standard, most manually set clocks are up to a full minute off all the time.
by d00d0ff000 3mo ago
NTP.
By any other standard, most manually set clocks are up to a full minute off all the time.
- subscribed 3mo agoYeah, but we're thinking of systems where nanoseconds matter. MiFID 2 alone forces sub-μs precision. Million times less than the leap 1 second. NTP minute away is good for displaying date on the workstation, not for many of the devices that are critical to the modern world.
- cyanydeez 3mo agodont most systems that rely on sharp timing simply manage it themselves.
- subscribed 3mo agoYesno. Sure they have their own time servers fed from the GPS, but they need to be _accurate_ in relation to the world. But timestamps used by companies forced to use very accurate timing must be synchronised to UTC.
- dmurray 3mo agoMiFID 2 does not require nanosecond accuracy. It's something like 100 microseconds in the strictest case. Some MiFID reports require microsecond or perhaps nanosecond precision, but that's really just a formatting requirement "please write your timestamps with six figures after the decimal point."
- subscribed 3mo agoI said, quote "MiFID 2 alone forces sub-μs precision", and not that it "requires nanoseconds accuracy". Put the strawman away. It's not "something like 100μs", it's 100 times less: 1μs. From a convenient QA: > Algorithmic and high-frequency trading (HFT) firms must timestamp to 1 microsecond (μs) accuracy, synchronized to UTC. For venues and systematic internalisers executing algorithmic strategies, this microsecond-level precision is non-negotiable. Other investment firms trading on venues must achieve 1 millisecond (ms) accuracy. No, precision means actually precision, not a length of a number.