настроить часы ядра (tune kernel clock)
Примечание (Note)
In struct timex, freq, ppsfreq, and stabil are ppm (parts per
million) with a 16-bit fractional part, which means that a value
of 1 in one of those fields actually means 2^-16 ppm, and
2^16=65536 is 1 ppm. This is the case for both input values (in
the case of freq) and output values.
The leap-second processing triggered by STA_INS and STA_DEL is
done by the kernel in timer context. Thus, it will take one tick
into the second for the leap second to be inserted or deleted.
