Just a guess: 
IPERF(1)                         User Manuals                         IPERF(1)

NAME
       iperf - perform network throughput tests

...

DESCRIPTION
       iperf is a tool for performing network throughput measurements.  It can
       test either TCP or UDP throughput.  To perform an iperf test  the  user
       must establish both a server (to discard traffic) and a client (to gen‐
       erate traffic).

It doesn't seem like something that would crash often...

In reply to Re^2: monitor iperf from perl by Anonymous Monk
in thread monitor iperf from perl by mark4444az

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