[ntp:questions] NTP Protocol Characterization

Emmanuel Tychon Emmanuel.Tychon at remove.this.ael.be
Tue Aug 12 16:02:13 UTC 2003


I am looking for a way to analyse NTP's performance under various 
network conditions like jitter, latency, packet loss, misordering,
and so on.

I have two different ideas in mind:

  - I have seen on ntp.org a reference to a tool called 'ntpdsim'.
    However, I can't find this tool in the distribution. Then, this
    lead to the other solution ....

  - Using two PCs, each of them synchronized with GPS clock. Between
    those PCs, I also run NTP through a network impairement generator
    like PacketStorm. Then I compare the NTP-time with the GPS-time.
    How can I compare my GPS-time and NTP-time? Is is possible to
    have ntpd running without touching the system clock?

Thanks for your attention,

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