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I'm looking for a way to test the bandwidth throughput of a c3.8xlarge instance.

I have two c3.8xlarge instances set up, so I imagine I could use the other to simulate the traffic.

What's the easiest way to go about it?

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  • iperf is simple enough, and very useful. keep in mind that you will probably not get correct values if you test between two aws instances Jan 28, 2014 at 17:39
  • @dusan.bajic Why would he not get accurate data testing between two EC2 instances?
    – EEAA
    Jan 28, 2014 at 17:49
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    @EEAA, It may be because the numbers reported by iperf when testing between EC2 instances, which could even be located in the same region and zone, would be unrealistic high when compared to testing the c3.8xlarge instance with servers outside the EC2 network.
    – niemion
    Jan 28, 2014 at 18:25
  • I think we need more details. Are you looking for the throughput from the instance to an outside source or strictly between two instances? Jan 28, 2014 at 18:43
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    Are the two instances in a VPC?
    – EEAA
    Jan 28, 2014 at 18:56

1 Answer 1

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few options..

  • (nu)ttcp
  • netcat and dd
  • iperf as someone already mentioned

ttcp is pretty simple. on one machine do nuttcp -S and on the other do nuttcp -v -v -i10 otherhostname

-i is the interval to print results

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