In message <[EMAIL PROTECTED]> Nate Williams writes: : You may not know the answer to this, but it's worth a shot. Wht kind of : accuracy can we expect using 'cheap' off-the-shelf GPS receivers? We're getting, with ntp4 on a 3.x kernel, about +- 4uSec with a cheap gps receiver + atomic clock on a i486 class machine. The clock doesn't want to sync more closely than that, likely due to the large jitter in the 8254 timing device, so the atomic clock is a bit of a waste for this part of our application (there are others it is needed for). With a pentium class machine and w/o the atomic clock "backing", I'd say you could easily get into the sub-micro second range. Warner To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
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