3 ms·
Even the length of a second is unstable in some implementations: https://developers.google.com/time/smear https://developers.google.com/time/smear
by thanksforfish 5y ago
Even the length of a second is unstable in some implementations:
https://developers.google.com/time/smear https://developers.google.com/time/smear
- slver 5y agoNah the length of a second is fixed as precisely 9,192,631,770 periods of radiation of caesium-133. The leap second concept again comes from the calendar. All of those higher-level concepts can come from software. The hardware just needs a clock that tells us how many (normal) seconds passed since someone shoved a battery on the thing, and how many seconds passed since the computer was booted. That's all. Well, also assuming it's approximate, unless the computer has caesium in it. Most pain in system design comes from poor judgments of where to put what. Separation of responsibilities can be non-obvious at first.