I have been assisting a friend with tuning his Netbackup installation. While debugging the source of his issues, I noticed that several jobs were reporting low throughput numbers. In each case the client was backing up a number of large files, which should have been streamed at gigabit Ethernet speeds. To see how much bandwidth was available between the client and server, I installed the iperf utility to test TCP and UDP network throughput.
To begin using iPerf, you will need to download and install it. If you are using CentOS, RHEL or Fedora Linux, you can install it from their respective network repositories:
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