[time-nuts] "software TCXO" on commodity computers

[Jeremy Elson]

This just won the Best Paper award at NSDI 2022:

https://www.usenix.org/system/files/nsdi22-paper-najafi_1.pdf

It's a clever idea: they observe that most commodity computer motherboards
have temperature sensors onboard, and found a correlation between clock
frequency and the output of that temperature sensor. Using that model they
were able to build a "pure software TCXO" that maintains frequency an order
of magnitude better than the typical performance of a crystal without the
corrections.