In article <87aai6d0t6....@cruithne.co.teklibre.org>,
 d...@taht.net (Dave =?utf-8?Q?T=C3=A4ht?=) writes:
>
>I've been racking my brain trying to come up with a good way of
>semi-passively detecting bufferbloat at the datacenter. 
>
>What would wild swings in latency on the order of seconds from a ntp
>client register on a ntp server as?

Are you trying to detect it in real time, or collect long term
data?

Turn on rawstats.  (info in monopt.html)  That will log 4 time
stamps for each ntp packet received.  If the time on both systems
is accurate, that will give you a pair of one-way times.

ntp tries to filter out the packets with long (queueing) delays
so you will see the bad stuff in rawstats that you won't see
in peerstats or ntpq -peers

-- 
These are my opinions, not necessarily my employer's.  I hate spam.

_______________________________________________
questions mailing list
questions@lists.ntp.org
http://lists.ntp.org/listinfo/questions
      • Re: [... John Hasler
      • Re: [... Steve Kostecke
      • Re: [... Dave Täht
        • R... E-Mail Sent to this address will be added to the BlackLists
        • R... Rick Jones
          • ... Dave Täht
            • ... E-Mail Sent to this address will be added to the BlackLists
              • ... Dave Täht
              • ... Richard B. Gilbert
    • Re: [ntp:... Rick Jones
  • Re: [ntp:quest... Hal Murray

Reply via email to