Module nc::linux_timex

Constants

ADJ_ADJTIME	switch between adjtime/adjtimex modes
ADJ_OFFSET_READONLY	read-only adjtime
ADJ_OFFSET_SINGLESHOT	old-fashioned adjtime
MAXFREQ	max frequency error (ns/s)
MAXPHASE	max phase error (ns)
MAXSEC	max interval between updates (s)
MAXTC	maximum time constant (shift)
MINSEC	min interval between updates (s)
NTP_SCALE_SHIFT
PIT_TICK_RATE	The clock frequency of the i8253/i8254 PIT
PPM_SCALE_INV_SHIFT
SHIFT_FLL	FLL frequency factor (shift)
SHIFT_PLL	SHIFT_PLL is used as a dampening factor to define how much we adjust the frequency correction for a given offset in PLL mode. It also used in dampening the offset correction, to define how much of the current value in time_offset we correct for each second. Changing this value changes the stiffness of the ntp adjustment code. A lower value makes it more flexible, reducing NTP convergence time. A higher value makes it stiffer, increasing convergence time, but making the clock more stable.
SHIFT_USEC	SHIFT_USEC defines the scaling (shift) of the time_freq and time_tolerance variables, which represent the current frequency offset and maximum frequency tolerance. frequency offset scale (shift)