[smokeping-users] Submillisecond RTT measurement accuracy

[Tobias Oetiker]

Hi Thomas,

Today Thomas Klein wrote:

> Hello,
>
> i have to setup LAN measurements and reporting for a 0.9 ms RTT Service
> Level Objective and try to investigate the Smokeping capabilities to do
> that. Anybody on the list who has done something similar already or can
> give me some hints about the accuracy i may can achieve with Smokeping?

smokeping uses rrdtool internally for data storage, so there is no
fundamental problem with even smaler numbers ... at worst it is a
presentation issue ...

the measurement happens with external tools anyway, so this again
is not something which smokeping will influence ...

> I am also wondering what method will be best, icmp ping, TCP syn, UDP
> echo? Hints are welcome.

this I don't know ...

cheers
tobi

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900