[erlang-questions] Amazon AWS benchmarking of erlang-diameter not upto the mark

Arshad Ansari <>
Mon Aug 29 17:55:11 CEST 2016


Hello there,

Today, as a part of evalution of erlang diameter client, relay & server, I
was benchmarking for requests per second. This same test was performed by
me on my local network and I was able to get 30K requests per second
between client and server using a single connection. However, on Aws I got
to only about 11-12K requests per second. I had used c3.x4large instance
with 16 cores and 30 GB ram for both client and server, which is 4 times
the core I have and twice the ram I had when I was testing locally. These
are compute enhanced instances to make sure I get to use core to the
maximum, but I wasn't even using 60% of cores on server and 80% of cores on
client.  I even used the same placement group to get 10GBps network
bandwidth. I can't think of any reason why there would be just a downgrade.
Has anyone experienced something of this sort on Aws while benchmarking
erlang?

Thanks in advance for the help.

Regards,
Arshad
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