Eric S. Raymond writes: > Good idea. I'd do it something like this: > > 1. Every time we ship a packet, take timestamps at the beginning and end of > the > critical region.
If it is possible to get the actual time the packet left, then that's the data to get the adjustment value from. I'm not sure exactly how hardware timestamping is implemented in the kernel, but at least some of the interfaces should be able to read back the timestamp that was attached to the outgoing packet. > 2. On the next send, adjust the timerstamp by the average of all previous > ones. You'd want to cut the (perhaps long) tail on the resulting distribution and then maybe get a more robust estimate than a simple average. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ SD adaptations for Waldorf Q V3.00R3 and Q+ V3.54R2: http://Synth.Stromeko.net/Downloads.html#WaldorfSDada _______________________________________________ devel mailing list devel@ntpsec.org http://lists.ntpsec.org/mailman/listinfo/devel
