Re: new : iperf servers that stay alive

[Kevin Gibbs <kgibbs --at-- ncsa.uiuc.edu>]

Thanks for looking into this problem and producing a patch. We will look 
into it and determine a solution that tests out well on all operating 
systems. We do not directly support this patch so any problems with 
it should be directed to Marc. Thanks again.

Kevin

On Wed, 22 Jan 2003 Marc.Herbert --at-- ens-lyon.fr wrote:

> 
> On most systems, iperf servers had a limited life expectancy. I think
> you can bring down most TCP iperf servers using such a loop :
> 
> n=1; while (./iperf -t 1 -c server.to.crash -P 50 ) ; do  printf "\n\nn $n\n\n\n"; let n=$n+1; date; done
> 
> 
> The heavily commented patch "iperf165_thread.patch"
>    <http://marc.herbert.free.fr/TCP/iperf/>
> hopefully solves the issue. Any feedback on it is highly welcome
> (further test results, congratulations, insults,...) It was tested on
> debian woody  linux 2.4.18 and Solaris 2.6.
> 
> 
> The few UDP tests I performed so far seem to show that this patch also
> prevent UDP servers from crashing, but I would not guarantee it; fully
> understanding the behaviour of the iperf threads in case of
> unreliability and timeouts is much more complex than in the case of TCP.
> 
> 
> 
> Sincerely,
> 
>