Timers with < juiffies tick granularity

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Hello all,

	I am interested in using a timer wich wakes up 20 ms. after a
determinate int. occurs. AFAIK, it is possible to declare timers with a
timeout which is multiple of 10 ms., but it did not remain quite clear
to me the moment in time when the timer expires. I understand it is
guaranteed it will do so *after* 20 ms, but there is no information on
when exactly after those 20 ms. (say, after N * 10 ms., ASAP, ...). 

	Could anyone shed some light please? Also, maybe you could suggest an
alternative way of implementing this delay different as timers, if there
were any.

	That is all. Thank you in advance for the help,


		Miguel García 




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