[ntp:questions] Testing throughput in NTP servers

Miroslav Lichvar mlichvar at redhat.com
Thu Sep 13 11:37:01 UTC 2012

On Wed, Sep 12, 2012 at 02:28:24PM +0200, Ulf Samuelsson wrote:
> Anyone knows if there are any available Linux based S/W to test the
> throughput of NTP servers?
> I.E:
> 	packets per second?
> 	% of lost packets
> 	etc?

I've used tcpdump and tcpreplay to measure the maximum packet rate
ntpd can handle. IIRC, the ntpd process itself needed only a couple of
percent of the CPU, I think the bottleneck is always in the kernel or
the NIC.

Miroslav Lichvar

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