[ntp:questions] mtp srver load figures?

Kasper Pedersen spam at kasperkp.dk
Sat Nov 21 14:10:07 UTC 2009


On 11/20/2009 08:36 AM, Hal Murray wrote:
>
> Don't calculate, measure.
>
> I just measured over 5000 packets per second on a 1 GHz Via.
>

More measurements:

15000 pps on a 1.6GHz Atom N270, ntpd pegged at 99% (one thread)
Much less than I expected. It'll only push 10Mbps of ntp packets.

8500 pps with chrony from git, 88% cpu (one thread) on the same board.
even worse.

My GPSDO with embedded ntp server, 66MHz AVR32 cpu and custom network 
stack (ntp is handled kernel-side) tops out at 9000 pps.
Not bad, considering the clock is 1/24 of the atom.


/Kasper Pedersen




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