Hi,
Is there a problem using rt-linux periodic funcions with xntpd running ?
Let me explain the scenario:
1. Assume the PC clock is set so that it is exactly one second behind UTC
2. Start a rt periodic task to pulse an I/O port bit high ever 10 seconds
on a 10 second boundary (i.e. at 0,10,20,30,40,50 seconds past the
minute )
- remember the PC clock is 1 second out
3. xntpd starts and migrates the PC clock to sync. to UTC
Will the period of the periodic task migrate also so that it now pulses on
a UTC 10 second boundary, or is the periodicity of the task asynchronos to
the PC clock once the periodic task start ?
Micheal.
Micheal.
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Micheal Colhoun voice: +353 91 524411 x 3327
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National University of Ireland, Galway
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