ScottyG wrote: > To do this the order in which market data was received and trades > transmitted need to be maintained. I do know from their current log
Remember that London and New York are, maybe 15 milli-lightseconds apart. Even before allowing for cable routing and velocity factors, you don't need 100ns accuracy to prove non-causality. > files that 1 ms is not fine enough for this and that on occasion .1 > ms is not good enough. They currently are using a feature of the > processors that seems to return clock tick on the microprocessor > (Some assembly language instruction). They have an algorithm for RDTSC. ntpd/Linux/FreeBSD kernels use this as one of their methods to interpolate hardware clock ticks. > controlling the skew that occurs using this method. This seems to > meet there needs in a single server scenario but when going across > machines this will obviously not work. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
