Amazon EC2 Web Run Tests
c6a.large - Feb 15 2022

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Web Run tests are made of a load test tool and a database intensive Rails web application.

The load test tool sends HTTP requests to the web application at a controlled rate and records HTTP response codes, response latencies and timeouts. The load test tool is multithreaded and runs on the same VPS where the web application runs.

The intent is to measure:

  • the response times (latency) of the web server
  • the amount of CPU used to serve those requests under various load levels
  • what's the maximum load at which 100% requests are served without timing out.

Provider: Amazon EC2
Plan: c6a.large
Datacenter: Virginia, USA
Number of CPU cores: 2
CPU type: AMD EPYC 7R13 Processor

Web Runs by request rate


Note: the P99 is the 99th percentile. The P99 latency is the latency of the 1% slowest HTTP requests in the web run.


Rate (reqs/s) Average Latency P99 Latency CPU idle CPU steal Successful requests Timed out requests Duration (minutes)
1 40ms 115ms 97% 0.00% 304 0 5
5 36ms 96ms 89% 0.00% 1504 0 5
10 45ms 120ms 75% 0.00% 6004 0 10
15 45ms 120ms 63% 0.00% 4504 0 5
25 47ms 130ms 37% 0.00% 7509 0 5
35 50ms 140ms 6% 0.00% 10513 0 5
40 51ms 140ms 0% 0.00% 10985 1015 5

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