I also found this to sample tcp latency performance: https://code.google.com/p/paping/

Does fq_codel's flow classification supports external classifier filter? Say I only want to hash on dst port in my case.

Thanks
Mo


2013/12/5 Toke Høiland-Jørgensen <toke@toke.dk>
Dong Mo <montedong@gmail.com> writes:

> What I am trying to do is measure the delay of packets of the same
> flow experienced in A under different queuing policies (sfq or
> fq_codel).
>
> Is there a simple way to do this?

I'm currently in the early planning stages for having something like
this incorporated into the netperf-wrapper [1] testing tool. In the
meantime, you could look at either thrulay [2] (old and apparently
abandoned, but may work in one of its variants) as a measurement tool,
or tcpprobe [3] to output statistics that can (probably) tell you.

-Toke

[1] https://github.com/tohojo/netperf-wrapper

[2] http://e2epi.internet2.edu/thrulay/
http://thrulay-hd.sourceforge.net/
http://thrulay-ng.sourceforge.net/

[3] http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe