[ntp:questions] Test ntpd performance

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Tue Sep 28 10:32:22 UTC 2010

>The most I've seen a single netperf *single-byte* burst-mode test do
>is on the order of 350K transactions per second, and that is when
>netperf is bound to a core other than the one taking interrupts from
>the NIC to get some additional parallelism.  In a netperf TCP_RR test,
>netperf does virutally nothing but a send()/recv() pair and a couple
>conditionals and adds.

Is that sending 1 byte of data per packet, or batching up
several/many bytes per packet?  (and mostly measuring
the CPU time for a one byte send/recv pair)

Even if you have a test program that blasts lots of packets,
that won't mimmic real traffic.  It's bypassing all the setup
of ARP and router slots.

The only really useful data I've seen is the numbers from the
people running heavily loaded servers.

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

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