HP NonStop G-Series - Manual (Page 35)

HP NonStop Time Synchronization User’s Guide Page 35 of 81
Value Range: -1 through 2147483647
Default Value: -1 (all backward changes should be drifted in)
Example: DriftBackwardThreshold = 1000
DriftForward True | False
Flag controlling whether operations involved in setting the system time “forward” (i.e. to a
later time) take place immediately or are done incrementally in a fashion that prevents
abrupt time change on the system. If True, TimeSync drifts forward time changes in
slowly. If False, TimeSync simply sets the system time to the new time value.
Value Range: True or False
Default Value: True
Example: DriftForward = False
DriftForwardThreshold
The threshold, in milliseconds, for which drift forward operations are allowed if the
DriftForward option is enabled. If the time change necessary is less than this value and
DriftForward is True, then forward time changes will be applied slowly (i.e. drifted). If the
time change necessary is greater than this value, then the local system time will be set
directly and time changes will not be drifted in. If the DriftForwardThreshold is less than 0,
then all forward time changes will be drifted in as long as DriftForward is True.
Value Range: -1 through 2147483647
Default Value: -1 (all forward changes should be drifted in)
Example: DriftForwardThreshold = 1000
MaxReplyDeviation
The threshold, in milliseconds, for determining whether a time response is acceptable or
not. If the time specified in a response varies from the local system time by more than the
MaxReplyDeviation amount, then the response is discarded by the TimeSync process.
This is useful for preventing situations in which an incorrect, invalid, or corrupted response
from a time source could cause the local system time to be set to an erroneous value.
Value Range: 0 through 2147483647