Re: A couple of newbe questions.

[Alvin Starr <alvin --at-- iplink.net>]

Marc Herbert wrote:

> On Fri, 7 Oct 2005, Alvin Starr wrote:
>
>  
>
> > 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.

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Alvin Starr                   ||   voice: (416)585-9971
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