One of the requirements for having accurate time is having a clock that actually runs at the right speed. Not surprisingly, none of the PCs that I’m monitoring at home actually have particularly accurate system clocks. They range from about 30 PPM fastMy file server, from Supermicro. to 60 PPM slow,Two Minsforum MS-01s and an Asus Epyc server. and even the best is still 1.5 PPM off.A cheap mini-PC, surprisingly. Measured clock frequency skew across servers, before correction by Chrony. To p...
