[ntp:questions] ntp server specs

Mike S mikes at flatsurface.com
Thu Apr 21 02:38:40 UTC 2011

At 08:51 PM 4/20/2011, unruh wrote...
>More like 10-100us.

Not on anything with more than a single hop across 1000base?, 
especially when you consider irq/processing jitter at both ends. If an 
NTP UDP packet is behind a single max length Ethernet frame on 1G, it's 
delayed 12 us. Go across a 10 Mb MAN, and you've got over 1 ms of 
jitter, even with NTP given high priority QoS, which is unlikely.

(_wormhole_.physics.ubc.ca? Your net admins don't know how to filter 

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