Kevin Oberman wrote: > To get an idea of the fanaticism involved, several years ago, Kirk > McKusick and my former boss here in Berkeley counted the machine cycles > in the FreeBSD kernel for the PPS response(all done in the interrupt > service routine) and used that to correct the time. Of course,in the > days of 16 and 40 MHz systems, this was a bit more important.
Determinism has been lost. Cache hits/misses, abitrated bus accesses, multicore contention, ... All have cost determinism in latency. You can count cycles but wont see the same count ever. uwe _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
