David J Taylor wrote: > Richard B. Gilbert wrote: >> David J Taylor wrote: >>> David Woolley wrote: >>> [] >>>> You won't get millisecond accuracy on Windows. Although the >>>> software clock can be disciplined to better than a millisecond, >>>> applications can only read to one tick, which is 10ms by default >>>> and 1ms with the fastest multi-media timers (which risks lost >>>> ticks). >>> >>> David, do you have a reference for your "risks lost ticks" statement >>> as applied to Windows? >>> >>> Thanks, >>> David >> >> ISTR that there have been previous references in this newsgroup. >> Specifically, EIDE disk drivers can mask or disable interrupts for a >> period long enough to cause a "lost tick". I believe the group is >> archived somewhere. . . . > > Thanks, Richard. I can imagine that any disks working in PIO mode > wouldn't be welcome friends either. The last EIDE desktop PC I bought > was some seven years ago, so I hope it's a problem which won't affect > too many people, and all being well not those starting from scratch. >
I don't know if SATA is any better. I don't run ntp on my PC. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
