Re: A couple of newbe questions.
> >>I just picked up iperf to try and simulate the traffic generated by VOIP
> >>udp packets.
> >>
> >>Under Linux I have found a couple of issues.
> >>1) the delay loop chews up huge anounts of system cycles and replacing
> >>it with usleep makes things run MUCH better.
> >>
> >>
> >
> >I think I remember hearing here that usleep() is far from being
> >portable.
> >
> >
> >
> I buy that. The only thing is that under linux( I would expect that
> other *nix's are the same) runing more than about 10 threads will pin
> the CPU. Forget about trying to run 50 or 100 threads.
> I was hoping to get iperf hacked into shape to handle several hundred
> sessions but it looks like I have a distance to go before I have that
> working.
>
>
>
I would be interested if you can post exactly what you're doing to
simulate the VoIP traffic. I'm running several installs of Asterisk
(open source PBX) across several offices. I've just been using it
mostly to test my QoS policies by measuring packet loss / jitter while
I soak the other classes of traffic. Being able to use IPERF to
actually stress test VoIP against expected bandwidth levels would be
great.
-Ron