I see it useful too,  when specifying for example "response_window" that instead of be 1 "One second" could be 1200 as in "twelve hundred milliseconds".
 I have found some devices that time out in 3 seconds , in these cases you still want to retry at least once . Of course here the network delay is kept under  300 milliseconds  end to end.


From: Alan DeKok <aland@deployingradius.com>
To: FreeRadius users mailing list <freeradius-users@lists.freeradius.org>
Sent: Wed, February 9, 2011 11:38:11 AM
Subject: Re: How to get fractions of seconds?

Stefan A. wrote:
> Best would be to have something like '%l', but in a resolution of
> milliseconds.

  This is impossible.

  The dates and elapsed times in RADIUS have a resolution down to one
second, but no more.

  It's possible to "fake" adding milliseconds, but they will bear little
relation to the actual session times.  Network delays, processing
delays, etc. will all affect the results.

  Alan DeKok.
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